My phone has the following issue: incoming calls don't come through (any attempt to call by other phones results in voicemail), and outgoing calls don't work either (the "Phone" app gets stuck on "Calling..." without even a single beep). Mobile data and SMS do work and the signal is at maximum. I tried switching the SIM card with mine, but the problem persists on the phone. I put the SIM in the second slot, but the problem remains the same. I have disabled both VoLTE and 5G.I tried messing with APNs. I tried calling the emergency number, **and it works, both with and without the SIM card**. I uninstalled and reinstalled the updates for Google Dialer, and I also uninstalled and reinstalled Carrier Services (including the beta release). I have restarted the phone multiple times. I even updated to the latest version (Android 13), but the problem still is the same before and after the update. Has anyone encountered a similar problem? How did you handle it? Phone is a Realme GT Master RMX3363 with Android 13 and 5th of July 2024 security patches applied. This is the output of adb logcat *:E (omitting the 4 left-most columns) when attempting to dial someone:

E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/min_freq not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 0]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/min_freq not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 0]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-LM: MetaMeter: handleAsync() 166: AdaptLaunch Invalid Async
    E ANDR-PERF-LM: MetaMeter: handleAsync() 166: AdaptLaunch Invalid Async
    E ANDR-PERF-LM: MetaMeter: handleAsync() 166: AdaptLaunch Invalid Async
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E OplusBracketLog: [OplusViewMirrorManager] updateHostViewRootIfNeeded, not support android.view.ViewRootImpl@d3293a
    E ANDR-PERF-LM: MetaMeter: handleAsync() 166: AdaptLaunch Invalid Async
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E IPCThreadState: attemptIncStrongHandle(209): Not supported
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SensorService: Required app irp, uid 10251, pid 17005
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E OplusBracketLog: [OplusViewMirrorManager] updateHostViewRootIfNeeded, not support android.view.ViewRootImpl@8c253c0
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E cellularState: - unhandledMessage: msg.what=7
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E Proxy : Unsupported message id 2003
    E Proxy : Unsupported message id 2003
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E msm8974_platform: platform_check_backend_tag_match: Invalid snd_device = voice-dmic-ef
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E EventRuleService: update error 20111 -8 : 配置项被删除停用
    E audio_hw_utils: audio_extn_utils_update_stream_app_type_cfg_for_usecase: app type cfg not supported for usecase type (2)
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E GestureMonitorController: updateGesturePhoneState no such gesture
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SELinux : avc: denied { find } for pid=3627 uid=1001 name=vendor.oplus.hardware.rpmh.IRpmh/default scontext=u:r:radio:s0 tcontext=u:object_r:hal_oplus_rpmh_aidl_service:s0 tclass=service_manager permissive=0
    E ModemAciService: rpm server is not available, update failed!
    E DialerMddCallerTagsConfigProvider: com.android.dialer.callertags.configprovider.mdd.MddCallerTagsConfigProvider.lambda$getTagConfigs$6:156 No file group for caller tags locale: it-IT [CONTEXT disable_client_error_logging=true ]
    E DialerMddCallerTagsConfigProvider: vlp: MEDIUM
    E DialerMddCallerTagsConfigProvider: at a.cc(PG:15)
    E DialerMddCallerTagsConfigProvider: at ebt.a(PG:574)
    E DialerMddCallerTagsConfigProvider: at vxl.a(PG:57)
    E DialerMddCallerTagsConfigProvider: at vwv.d(PG:3)
    E DialerMddCallerTagsConfigProvider: at vwx.run(PG:42)
    E DialerMddCallerTagsConfigProvider: at qmf.run(PG:3)
    E DialerMddCallerTagsConfigProvider: at vrk.run(PG:50)
    E DialerMddCallerTagsConfigProvider: at qbv.run(PG:166)
    E DialerMddCallerTagsConfigProvider: at qbv.run(PG:394)
    E DialerMddCallerTagsConfigProvider: at java.lang.Thread.run(Thread.java:1012)
    E DialerMddCallerTagsConfigProvider: at qnh.run(PG:64)
    E ModemAciService: sendSettleObj2Statsd over!
    E cellularState: - unhandledMessage: msg.what=4
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E OplusCustomizeRestrictionManagerService: getMobileDataMode error :s == null
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E DialerMddCallerTagsConfigProvider: com.android.dialer.callertags.configprovider.mdd.MddCallerTagsConfigProvider.lambda$getTagConfigs$6:156 No file group for caller tags locale: it-IT [CONTEXT disable_client_error_logging=true ]
    E DialerMddCallerTagsConfigProvider: vlp: MEDIUM
    E DialerMddCallerTagsConfigProvider: at a.cc(PG:15)
    E DialerMddCallerTagsConfigProvider: at ebt.a(PG:574)
    E DialerMddCallerTagsConfigProvider: at vxl.a(PG:57)
    E DialerMddCallerTagsConfigProvider: at vwv.d(PG:3)
    E DialerMddCallerTagsConfigProvider: at vwx.run(PG:42)
    E DialerMddCallerTagsConfigProvider: at qmf.run(PG:3)
    E DialerMddCallerTagsConfigProvider: at vrk.run(PG:50)
    E DialerMddCallerTagsConfigProvider: at qbv.run(PG:166)
    E DialerMddCallerTagsConfigProvider: at qbv.run(PG:394)
    E DialerMddCallerTagsConfigProvider: at java.lang.Thread.run(Thread.java:1012)
    E DialerMddCallerTagsConfigProvider: at qnh.run(PG:64)
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied

    E SensorService: Required app com.android.server.display.DisplayPowerController, uid 1000, pid 1750
    E minksocket: MinkIPC_QRTR_Service: client with node 1 port 4fc0 went down
    E minksocket: MinkIPC_QRTR_Service: client with node 1 port 4fc1 went down
    E minksocket: MinkIPC_QRTR_Service: client with node 1 port 4fc2 went down
    E Diag_Lib: [IMS_AP]"ims-rtp-daemon ims_rtp_qmi_handler_thread_func waiting on select thread>"
    E Diag_Lib: [IMS_AP]"ims-rtp-daemon ims_rtp_qmi_handler_thread_func waiting on select thread>"
    E minksocket: MinkIPC_QRTR_Service: client with node 1 port 4fc3 went down
    E Diag_Lib: [IMS_AP]"ims-rtp-daemon ims_rtp_qmi_handler_thread_func waiting on select thread>"
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E Orms_ManagerInner: cannot connect to orms core service!
    E DpcExtImpl: execute mBlockReasonList.clear
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E cellularState: - unhandledMessage: msg.what=4
    E OplusCustomizeRestrictionManagerService: getMobileDataMode error :s == null
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:139
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E IHansComunication: HANS printMessageBody: RCV message: type = 3,port = 86870,caller_pid = 1,caller_uid = 0,target_pid = 17334,target_uid = 0,pkg_cmd = -1,rpc = signal/-1
    E VendorNfcService: changeNfcStateByWirelessCharge: feature WIRELESS_CHARGING = true; mIsWirelessCharging: false; mIsReverseChargingSwitchOpen: false; mNfcWorkMode: 0; isOverSeaRegion() = true
    E Battery : ChargeProtectionUtils: mCanlendarTmp.isEmpty()!
    E TetherController: property_get sys.radio.data.modem_share_flag return 0, 1!
    E horae : 0: back:36374,frame:35546,front:37482, 6, +(2501), 1 ,36800,38000,37000,38000,39983
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E TetherController: property_get sys.radio.data.modem_share_flag return 0, 1!
    E OplusArpPeer_euclid_psw: ARP read failure: android.system.ErrnoException: read failed: EAGAIN (Try again)
    E OplusArpPeer_euclid_psw: OplusArpPeer close
    E VendorNfcService: changeNfcStateByWirelessCharge: feature WIRELESS_CHARGING = true; mIsWirelessCharging: false; mIsReverseChargingSwitchOpen: false; mNfcWorkMode: 0; isOverSeaRegion() = true
    E Battery : ChargeProtectionUtils: mCanlendarTmp.isEmpty()!
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E sensors-hal: handle_sns_client_event:86, pedometer_minute: report_ts=11,counter=0.000000 move_status =[SNS_CMC_STATIONARY] time_gap = 0 run_counter=0.000000 walk_counter=0.000000
    E AppOps : attributionTag not declared in manifest of com.oplus.exsystemservice
    E AppOps : attributionTag not declared in manifest of com.oplus.exsystemservice
    E TetherController: property_get sys.radio.data.modem_share_flag return 0, 1!
    E horae : 0: back:36164,frame:35033,front:36835, 6, +(3028), 1 ,36800,38000,37000,39000,39863
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E TetherController: property_get sys.radio.data.modem_share_flag return 0, 1!
    E VendorNfcService: changeNfcStateByWirelessCharge: feature WIRELESS_CHARGING = true; mIsWirelessCharging: false; mIsReverseChargingSwitchOpen: false; mNfcWorkMode: 0; isOverSeaRegion() = true
    E Battery : ChargeProtectionUtils: mCanlendarTmp.isEmpty()!
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E TetherController: property_get sys.radio.data.modem_share_flag return 0, 1!
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E VendorNfcService: changeNfcStateByWirelessCharge: feature WIRELESS_CHARGING = true; mIsWirelessCharging: false; mIsReverseChargingSwitchOpen: false; mNfcWorkMode: 0; isOverSeaRegion() = true
    E Battery : ChargeProtectionUtils: mCanlendarTmp.isEmpty()!
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E DpcExtImpl: execute mBlockReasonList.clear
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E Proxy : Unsupported message id 2003
    E Proxy : Unsupported message id 2003
    E Proxy : Unsupported message id 2003
    E Proxy : Unsupported message id 2003
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E cellularState: - unhandledMessage: msg.what=8
    E GestureMonitorController: updateGesturePhoneState no such gesture
    E GestureMonitorController: updateGesturePhoneState no such gesture
    E GestureMonitorController: updateGesturePhoneState no such gesture
    E GestureMonitorController: updateGesturePhoneState no such gesture
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E minksocket: MinkIPC_QRTR_Service: client with node 1 port 4fc4 went down
    E Diag_Lib: [IMS_AP]"ims-rtp-daemon ims_rtp_qmi_handler_thread_func waiting on select thread>"
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E msm8974_platform: platform_check_backend_tag_match: Invalid snd_device = voice-dmic-ef
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E DamilaCallUtils: isCallOnNr rat = 6
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbOpen failed with error=Permission denied
    E SchedAssist: sysOpen failed with error=Permission denied
    E SchedAssist: sharedImFd failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E MMListServiceParser: open file /proc/3732/cmdline err 13
    E d.calllogbackup: Unknown bits set in runtime_flags: 0x40000000
    E d.calllogbackup: Not starting debugger since process cannot load the jdwp agent.
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E IPCThreadState: attemptIncStrongHandle(85): Not supported
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E vxu : Uh oh! An open ClosingFuture has leaked and will close: {0}
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E TetherController: property_get sys.radio.data.modem_share_flag return 0, 1!
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - cpubw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [6, 3]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E ANDR-PERF-OPTSHANDLER: Perflock resource /sys/class/devfreq/soc:qcom,llccbw/bw_hwmon/sample_ms not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 3]
    E ANDR-PERF-OPTSHANDLER: Perflock resource SPECIAL_NODE - llcbw_hwmon_hyst_opt not supported
    E ANDR-PERF-RESOURCEQS: Failed to apply optimization [12, 2]
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E SchedAssist: ofbSetSfMsgTrans pid(1419) failed with error=Permission denied
    E NhsManager: getLastLoc fail for GDPR!
    E NhsManager: getLastLoc fail for GDPR!
    E NhsManager: getLastLoc fail for GDPR!
    E NhsManager: getLastLoc fail for GDPR!
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 100, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E netd : dispachCmd:oplusGetRtt
    E netd : handleGetRttCmd: netId = 104, uid = 10251
    E netd : dispachCmd cmd:oplusGetRtt result:0
    E IHansComunication: HANS printMessageBody: RCV message: type = 3,port = 86870,caller_pid = 1,caller_uid = 0,target_pid = 17406,target_uid = 0,pkg_cmd = -1,rpc = signal/-1

I'm buying a new phone, upgrading from an LG Q7+, and so far the best phone I've seen is the Xiaomi Redmi Note 9. The only con to this is that the Note 9 is only available in International version, and I live in the USA. I've heard that Metro by T-Mobile (my service provider) is good for international phones, but I don't know if it will be comparable to buying a domestic phone. That is, I don't want to get a really good phone but sacrifice all of my connection speed. If it's a little slower, I'm fine with it, but if it will be a major difference, I'll shop domestic. One thing I've noticed is that, according to this site https://www.gsmarena.com/compare.php3?idPhone1=9206&idPhone2=10192 , the Note 9 actually has more 4G connectivity than my current Q7+ (11 bands compared to 9). Does this mean that it will be more reliable than my current phone, or does this mean nothing since it's international? (Note that I'm not very tech savvy. I know next to nothing about these complicated specs, so I don't actually understand the numbers) The bottom line is, I want to buy a new phone, but I want to be sure that the new model I'm considering will have comparable connectivity speed to a domestic phone. I know that T-Mobile will support international phones, but I want to be sure that the support is good compared to their domestic support. If anyone reading this owns a Xiaomi in the US, I'd love to hear from you, but anyone who knows about this sort of topic would be extremely useful to hear from. Thank you to anyone who has read this far. I appreciate the help! EDIT: I've found this site https://www.kimovil.com/en/frequency-checker/US/xiaomi-redmi-note-9 which suggests that it will work on US networks, but I have no idea what the numbers and technical terms mean. I'd like to know what exactly this says about the network reliability in the US. Thanks for putting up with my lack of tech knowledge!

I recently won an HTC One V and I want to sell it, but I'm not sure what carriers it supports. I won it from an HTC stand I went to, and all they said was that the phone was unlocked so that it could be used with any carrier. How can I tell if it's CDMA or GSM? I can't remove the cover to see an ESN or HEX number, and I don't see any spot for a SIM slot. On the label of the phone it has an IMEI number, an S/N number and a P/N number. Any ideas? I see listings on ebay that say GSM and other listing that say GSM/HSPA. How do I tell?

My phone is a replicate of the Huawei P8 called p8 lt Dual sim Android 6.01. After I used an app called Network Mode Universal to enable LTE on my phone, the signal disappear and I can't use my CDMA SIM anymore. At first, all I did was change the mode to LTE only. Then I tried other options, but nothing works. Other than that, GSM seems to work fine. > > I tried restarting my phone, resetting my network, and using another CDMA card but nothing works. How I can reset my configuration?

Sometimes it's desirable to use a device on a carrier that does not officially sell it. Often this is due to regional differences and travel (for example, using a US phone in Europe) but also because some carriers simply do not offer phones that other carriers do. How can I determine if it's possible to use my phone on a different carrier, and which carriers it is compatible with? ----- *This community wiki is intended to be a canonical answer to a common question. If you feel that improvements could be made then please edit the post(s).*

As I know that Android phones can share WiFi by using tethering. So, may I know if it is possible to even share my phone GSM/3G/2G connection? (of course without applying another SIM card for another phone.) Suppose there are two friends - Jack and Jill. Jack has an Android 4.2 phone while Jill has an Android 2.3 phone. Jack has a SIM card inserted into his Android phone, but Jill is currently thinking of signing a mobile plan and so her Android phone does not have a SIM card. What happened was that Jill need to make a call to one of her relatives due to whatever reason. However, Jill does not have a mobile plan yet. The problem arrives when Jack also needs to make a phone call. So, is it possible for Jack to tether his "mobile plan" to Jill, who does not have any mobile plan or SIM card? This means that both Jack and Jill can make calls using a single SIM card but with two different Android devices.

hello I was wondering whether it would be possible to apply voice changer on GSM Phone call in realtime? If possible, then I'm thinking of using a voice changer mechanism to secure the voice data before being transmitted to the receiver.

I have a Samsung Galaxy Ace, with quad-band I believe. It is possible to see the current connection network type, e.g. UMTS, EDGE, etc, by going to Settings -> About Phone -> Status. But it does not tell which frequency band it is on. Is it possible to find out which frequency band (either exactly, or just which of the four major bands) that I am using?

Help please. I repaired my phone's imei with xposed and now i have no network connection. When i choose a network it says: sim card doesn't allow connection to this. I put the sim in other phones and sim was ok. tried only gsm , only wcdma and no change. Phone model is y560 L02 qualcomm

I had cm-11-20150517-NIGHTLY working, then upgraded to cm-11-20150607-NIGHTLY. Now I get the error "No service" and have basically no GSM functionality whatsoever. If I attempt to select a network operator, I get the error: "Error while searching for networks." I installed this using TWRP, there were no issues with the install. Automatic upgrade failed, I believe this is due to an encrypted file system, something which TWRP does not handle. What I have tried: Rebooting by itself. Removing the USB cable and rebooting (apparently this was a known issue before). Reverting to cm-11-20150517-NIGHTLY, this does nothing, same problem. Resetting APNs to default. Device: GT-N7100, CyanogenMod version: 11-20150517-NIGHTLY-n7100, Android version: 4.4.4

I want to use my phone number when traveling abroad and there is no possibility to setup roaming, etc. So the idea is: I have Android smartphone. I have my SIM inserted in the phone. The phone works as usual phone - it is turned on and connected to charger. I need software that is capable to answer for incoming phone calls and relay the call via internet to some other phone or PC with corresponding software that runs on it. That is when somebody calls me, my phone that is turned on in my home answers to call, transfer the call/voice via internet to another country where I obtain some signal to my second phone or PC and can have a conversation. I have VOIP phone number but this doesn't solve the issue - I need exactly the phone number bound to my physical SIM - some services verify that number is virtual and do not work with such numbers. Could you please suggest Android application that solve the issue. **Updated:** I've fount following article related to question. What do you think about it? Using Android phone as GSM Gateway for VoIP

More specifically, I'd like to know if a Sprint-based carrier (Tello) will work on a Xiaomi Redmi Note 8 (M1908C3JG).

I had read somewhere that the caller’s cell tower information is sent to the receiver of the call. Is it true because I can’t find any details regarding this online? If this is true why are there no apps to show this information on the receiver side of the call? Edit: For this we can consider that the phone is rooted and the entire ROM is open source including the vendor RIL framework.

Normally we can lock our mobile to either LTE, WCDMA, or GSM thorough Network Mode option from setting. But I would like to lock specifically 900MHz and/or 1800MHz band, which they are included as GSM in the Network Mode. Then my question is: is any way to do that way? Prefer if I can do with command or script only without installing any application. But thorough application also will be fine too.

[In Android's source code, I see](https://android.googlesource.com/platform/hardware/ril/+/master/include/telephony/ril.h) typedef enum { PREF_NET_TYPE_GSM_WCDMA = 0, /* GSM/WCDMA (WCDMA preferred) */ PREF_NET_TYPE_GSM_ONLY = 1, /* GSM only */ PREF_NET_TYPE_WCDMA = 2, /* WCDMA */ PREF_NET_TYPE_GSM_WCDMA_AUTO = 3, /* GSM/WCDMA (auto mode, according to PRL) */ PREF_NET_TYPE_CDMA_EVDO_AUTO = 4, /* CDMA and EvDo (auto mode, according to PRL) */ PREF_NET_TYPE_CDMA_ONLY = 5, /* CDMA only */ PREF_NET_TYPE_EVDO_ONLY = 6, /* EvDo only */ PREF_NET_TYPE_GSM_WCDMA_CDMA_EVDO_AUTO = 7, /* GSM/WCDMA, CDMA, and EvDo (auto mode, according to PRL) */ PREF_NET_TYPE_LTE_CDMA_EVDO = 8, /* LTE, CDMA and EvDo */ PREF_NET_TYPE_LTE_GSM_WCDMA = 9, /* LTE, GSM/WCDMA */ PREF_NET_TYPE_LTE_CMDA_EVDO_GSM_WCDMA = 10, /* LTE, CDMA, EvDo, GSM/WCDMA */ PREF_NET_TYPE_LTE_ONLY = 11, /* LTE only */ PREF_NET_TYPE_LTE_WCDMA = 12, /* LTE/WCDMA */ PREF_NET_TYPE_TD_SCDMA_ONLY = 13, /* TD-SCDMA only */ PREF_NET_TYPE_TD_SCDMA_WCDMA = 14, /* TD-SCDMA and WCDMA */ PREF_NET_TYPE_TD_SCDMA_LTE = 15, /* TD-SCDMA and LTE */ PREF_NET_TYPE_TD_SCDMA_GSM = 16, /* TD-SCDMA and GSM */ PREF_NET_TYPE_TD_SCDMA_GSM_LTE = 17, /* TD-SCDMA,GSM and LTE */ PREF_NET_TYPE_TD_SCDMA_GSM_WCDMA = 18, /* TD-SCDMA, GSM/WCDMA */ PREF_NET_TYPE_TD_SCDMA_WCDMA_LTE = 19, /* TD-SCDMA, WCDMA and LTE */ PREF_NET_TYPE_TD_SCDMA_GSM_WCDMA_LTE = 20, /* TD-SCDMA, GSM/WCDMA and LTE */ PREF_NET_TYPE_TD_SCDMA_GSM_WCDMA_CDMA_EVDO_AUTO = 21, /* TD-SCDMA, GSM/WCDMA, CDMA and EvDo */ PREF_NET_TYPE_TD_SCDMA_LTE_CDMA_EVDO_GSM_WCDMA = 22 /* TD-SCDMA, LTE, CDMA, EvDo GSM/WCDMA */ } RIL_PreferredNetworkType; The problem is, I don't know what the terminology maps to. "LTE" is obviously just 4G LTE, but what are TD-SCDMA, WCDMA, and EvDo? I'm assuming at least some of them must map to 2G (GPRS), 2G (EDGE), 3G, "3.9G" (HSPA+), but which is which? And which ones are actually CDMA (Sprint, Verizon, etc.) rather than GSM? (I'm a little confused because it seems GSM LTE phones also have modes like WCDMA?)

When I travel to Europe, I buy a SIM, stick it in a Moto-E that has a European radio, then tether my regular cell phone. This has been an effective solution since I'm using my regular phone, and I have all my apps. But, last time I traveled, I got a LycaMobile (Denmark) SIM, but they blocked tethering. The data connection worked fine from apps on the European phone. The wifi hotspot could be set-up on the European phone. My US cell phone successfully connected to the European phone's wifi hotspot. But as we all know, unless there is Internet connectivity, having a successful wifi connection is useless. I went to two LycaMobile outlets and they confirmed that tethering is blocked for the plan I bought. My question: would a user-space application (like PdaNet+) allow me to connect my US cell phone via wifi and allow me to access the Internet even though the normal Android tethering was blocked by the carrier? (Moto-E, Android 4.4.2 (API 19))

My brand new out of the box Moto G6 won't send or receive SMS. I'm using the official SMS app which has SMS permissions (triple checked this) and is the default SMS app. I tried everything: cleaning cache, reinstalling, updating, rebooting, turning off both SIM cards, rebooting the radio through phone commands, etc. Nothing worked. How to fix this?

I'm considering buying the Oppo F9 Pro, which has a dual sim GSM slot. I currently have consumer cellular service with a nano GSM sim card. would I be able to import the Indian phone and use it here without any problems?

Will this "SIM Free" Android phone for sale near Osaka (Japan) work in Europe and North America? Hello, So my phone recently went temporarily out of order and then I saw this Asus ZenFone 3 for sale in a second hand shop near Osaka (Japan). It says "Sim Free" I think but do you guys think it would work in Europe and North America as well? Vesa   

I've been trying to figure out how to achieve the best audio quality in phone calls, and part of it is finding out whether GSM, CDMA, LTE or other standards/technologies compress the audio the same way or differently depending on the phone's settings or hardware. I'm not asking about internet audio calls (like using Skype for example) but regular built-in phone calls. Does the available network type determine the audio quality of phone calls? Can I improve the sound quality if I get a phone from a GSM or CDMA carrier? Does LTE or some other more modern standard improve audio quality significantly?