Have iPhone which is connected to WiFi network which doesn't have access to internet. iOS apparently detects that there is no internet and tries to disable WiFi for a short period of time and connect to 4G. Noticed it because iPhone is connected to AirPlay device and music is stopped every ~15 minutes and when I check the connection I see 4G, but not WiFi.

I have just received a new SIM card I want to use in an iPhone 4S. The phone reports decent 3G connectivity and can make phone calls, but it does not connect to data services. Data services work when using older SIM cards from the same carrier. Also, the new SIM card works when installed in newer phones (testet on an iPhone SE and an iPhone X). So, out of six possible phone and SIM combinations, the only one not working is the oldest phone with the newest SIM card. All SIM cards are from the same carrier, and the Mobile Data Network settings are as recommended by the carrier, and identical across the phones, except that the oldest phone is a 3G phone, while the newer models support 4G/LTE. Can the new SIM card be incompatible with older phones? If not, what can the issue be? The carrier support has been unhelpful so far.

I have an iPhone 7 which I bought directly from Apple, and my SIM contract is with Three here in the UK. I have been using this phone happily since September, I had noticed the mobile data connection flips between *3G* and *4G* which I thought little of at first. I figured 3G = HSPA/+ and 4G = LTE. However, the other week I was with a friend in the US who had recently got a 7 plus. She is with AT&T and I noticed that her phone was most often displaying *LTE* as the connection type. I thought this was odd as I had never seen this on my own iPhone 7 and had presumed that 4G meant LTE. I did a little googling and found some discussions which claimed that on iOS the 4G mean HSPA+ and 3G means regular old 3G. In this case I was double confused as my carrier, Three, supposedly has a 4G LTE network and so I should see LTE from time to time. I understand that Three does not have an LTE-Advanced network, only regular LTE. So is this perhaps the distinction and confusion? 4G = LTE and LTE = LTE-Advanced? Could somebody perhaps clear up what is going on? Do I need to contact my carrier to change the network connection settings on my phone? If I can make use of the iPhone 7's faster mobile data tech then I would like to as I am a very heavy data user. The reason I went with Three was for their unlimited data tariff. EDIT: As requested by owlswipe. A photo showing Speedtest saying the network is "Three LTE" with the network icon at the top left saying "4G" which it did throughout the test. I am on 40th floor of a tower here so speeds aren't fantastic... 

Under Settings > Cellular, there's an option to enable/disable LTE. When disabled, my phone reverts to 4G, as indicated by the icon in the status bar. I've read elsewhere that using 3G causes greater battery drain than 4G (in fact, Apple's own iPhone 5s spec sheet indicates that you only get 8 hours of 3G data, versus 10 hours of 4G LTE data). Which leads me to the following line of thought... If I disable LTE and revert to standard 4G, what is the effect on battery life?

I would like to know how many antennas are inside an iPhone 7 for the 4G connection? Is it possible to have multiple antennas on an iPhone to make the received signal stronger and give better data throughput? Thanks

This question applies to phones on the AT&T network. I don’t know if the same happens on other networks. You're no doubt familiar with the AT&T Star Services codes one uses from the Phone app on an iPhone, such as *3282# to check data usage or *646# to check minute usage. Whenever I send one of those codes while on the LTE network, the connection switches to 4G and remains there until you get the information you requested (via SMS), and remains on 4G even after the SMS text is received. After anywhere from 20 to 60 seconds the connection automatically goes back to LTE. Any idea why this happens?

I have a Time Capsule but no internet cable attached to it. But I have an iPhone with 4G and I need mobile internet to be shared with other devices connected to the Time Capsule Wi-Fi network.

My iPhone 5s always (since I bought it 14 months ago) connected to my Wi-Fi at home in priority over the 3G or 4G connection. Recently (for about 2 weeks now) it gives preference to 4G for some reason and my mobile internet service limit (200 MB) goes over in a few minutes if I'm watching a video, for example. Why would this happen? I don't remember changing anything in the definitions/options, only thing I did was an update to a new version of iOS, but then it only started to happen about 3 weeks after I did that update, so it seems like it's not related with that. Can I do anything to stop this from happening? Is it possible that I'm getting cuts in my wifi service and while the phone does not get connection with the Wi-Fi it starts to get it from the 4G connection without asking or even letting me know?

I ordered an iPhone 5c for 4G usage. However, the phone I received displays a 3G on the top left of my screen. Does 3G on the top left mean I'm using 3G? Does this convert to 4G through proper configuration?

iBooks will not download to it, as it requires OS7,which the iPod 4th Gen cannot accommodate... I downloaded Adobe Reader, but can't locate the file on my iPod for it to open (when it's attached iTunes tells me the file is in "Books", but I can't find "Books" on the iPod itself)

I'm used to "3G" and "E" on my AT&T iPhone 3GS, and I understand I may see "4G" on my new iPad when I enter a 4G area. However, I recently saw "o" on the new Verizon iPad, and had no idea what it meant. ### What network connectivity indicators can I expect to see on my iOS devices, and what do they generally mean? ### Are the connectivity indicators the same for all iOS devices (with expected carrier differences) or should I assume "3G" on the 1st gen iPad means something different than "3G" on the new iPad?

I am thinking if it is possible to use my phone's SIM card in iPad's SIM slot? This because I need the 4G just only very few times, so when it will be necessary to use it, I will move the SIM from my smart-phone to the iPad. It is possible this scenario?

I was wondering how I could upgrade my jailbroken iPod touch 4g (4.1) to 5.1 or higher? I found the following instructions by cksum on the forum: > You will require iTunes. Connect the device, then right click on it in > the iTunes side bar. Select "Back Up." Allow it to runs its course. > Close iTunes. > > Then put the device into DFU mode: > > 1) Power off the device. > 2) Disconnect it. > 3) Hold the power button for 2 secs. > 4) Without letting go of the power button, press and hold the home button for 10 secs. > 5) Let go of the power button but not the > home button for another 10 secs. > > Reconnect the device and launch iTunes. It will detect your iPad and > inform you it is in recovery mode. From there, it will check for the > newest available update (5.1), download it and install it. When that > completes, simply restore your device from the backup you made > earlier. But I was just wondering if after this I would have to jailbreak my iPod again.

If I buy a new iPad with 4G LTE in the United Kingdom, will the 4G LTE work in Sweden (with a SIM from a carrier offering 4G LTE obviously)? I am asking not least because of statements in this article that 4G LTE uses different bands in different countries.

I have a factory unlocked iPhone 5 bought from my home country. I'll be travelling to the US, and I was wondering if I can get a short 4G data plan (six months) from any carrier in the US? *Last year, I went to the US and T-Mobile specifically couldn't offer me a 1-month 3G for my iPhone 4, only edge speeds, but I read rumors about recent support of these features... Hence my question.*

Since UMTS is a lot fast than EDGE, data transfers via UMTS take less time. When downloading the same file, it would take longer to be downloaded via EDGE. * Doesn't the difference in transfer time (partly) kill the advantage of saving power as the antenna pulls power for longer to end the transfer?

I have the original 2010 iPad 3G, and when I purchased it I also got a SIM card for Rogers 3G data service here in Canada. Can I simply remove the 3G SIM card from my original 2010 iPad, and insert it into my new 2012 iPad when it arrives? i.e. is it compatible and will my data plan continue to operate as before, but on the new iPad? Then, even if it is compatible, is there an advantage to getting a new SIM card? Are there data features for the new iPad (e.g. higher speed?) only enabled by a new SIM card?

Both my iPhone 4S and iPad 2 are running iOS 5.1. Both are AT&T models. When not connected to Wi-Fi, the network indicator on the iPhone shows 4G while the iPad shows 3G. Does the iPad use a different network? I'm not looking to stir up religious fervor over the semantics of 4G vs. 4G LTE. I'm just trying to find out if my iPad and my iPhone have the same data connection capabilities or not.

Since upgrading my iPhone 4S to iOS 5.1 (from 5.0.1), the AT&T network status indicator now reads "4G" where it once read "3G". What has changed from the previous version? Does this "4G" mean the same thing as it does on the "new iPad"?