I am using Micromax A89 with ICS 4.0.4 512 MB RAM Screen 4.0 Inch I am facing this problem since beginning. But it was solved automatically. Now again it happens when I dial a call or receive a call my mobile's screen goes off and does not come back. I must have to use power button to end the call (I set "Power button end call" checkbox from settings). I think it's a proximity sensor problem but not sure? But when I restart my mobile then it works for 1 or 2 calls but after it again it creates this issue. Any help would heartily be appreciated.

Device: MMX A89 Android: 4.0.4 Ice Cream Sandwich Whenever I switch off the phone, then switch it on, SIM card contacts takes a long time to load. They don't load properly. In the call list, only phone numbers are shown and not the names associated with them. How can I fix this problem?

So, I'm having problem downloading apps from Play Store because apparently, I have insufficient space on device. The app I want to download is of only 12.68 MB and my system storage has 113 MB, phone storage has 596 MB, and SD card has 1.46 GB available. I tried cache cleaning, uninstalling unwanted apps, moving the movable apps to SD card but it still won't work. The device I'm using Micromax Bolt A089 with a 4 GB SD card. Please help. Thank you.

Device : MMX A89 OS : ICS 4.0.4 Battery : 1400 mAh Is it feasible install 3000 mAh battery to MMX A89 mobile? As internet is ON on mobile so it's getting drain within 6 to 8 hours and I am not using internet with lot of use. Although battery get drained so quickly. Any solution?

> Device : MMX A89
OS : ICS 4.0.4 What is the benefit to Disable "Quick Boot" in Android Smart Phones? I am most concerned about MMX A89 first. And it would be great if could also know about general case. But first and foremost for MMX A89.