Common Problems

Does not boot into Recovery

• check that you followed the installation guide
• try fastboot erase system + userdata

Bootloop / does not boot into Android

• make sure you flashed the right ROM .zip for your device
• make sure the ROM download is complete and the .zip is not corrupted
• did you flash the kernel (boot.img) from the ROM? Other kernels are not supported.
• did you really extract boot.img from the .zip you installed last, and flash it with fastboot?
  You cannot run a kernel from an older build. You must flash the kernel every time you flash a new ROM.

No Playstore

• flash GApps. See the installation guide, or use what Mardon provides. GApps version always must match the ROM version.

High battery drain

±10% drain per hour is usually caused by something keeping the CPU awake ("wakelock"). Usual suspects:

• WiFi

  • Try Settings > Wifi > Advanced > Keep Wifi on during sleep : never
  • Some WiFi-routers are poorly optimized for mobile devices and send wake-up requests all the time, leading to high awake times and therefore high battery drain.

• GPS
  Better do not turn off GPS manually; or reboot after turning off. It works better if GPS turns itself off when no app uses it.

• Bluetooth Often changes. If you have a problem, the only 100% sure way is to reboot after using bluetooth.

• Google Location Services
  Set Settings > Accounts/Google > Location settings : off and see if it solves the battery drain
  Change GPS/Wifi in Settings > Location access and see what happens

• Bad apps
  If the built-in battery tool does not help you find it, try the BetterBatteryStats (BBS) app. The following two links can help you find the source of your battery problems:

  • How to Find the Root Cause of Your Android Battery Problems, How-To Geek
  • [GUIDE] The Total Newb's Guide to Wakelocks, XDA-Developers

  3G data often results in higher drain than 2G, but this is not as bad as wakelocks.

(KitKat) Running out of data / internal storage full

• use Settings > Apps to move apps to the SD card
• use the Link2sd app to move more files to SD
• experiment with int2ext and related scripts here

Some games just display a blank screen

• try adding this line to build.prop:

    ro.opengles.surface.rgb565=true
  

Headset does not work properly

• test the headset with some other newer devices
  • if its working properly then this article will explain
    • solutions: get a OMTP CTIA converter cable or self rewiring on audio jack (exchange wire between mic and ground) or get a OMTP standard connector headset.
    • convert your CTIA standard headset to a normal earphone (no microphone function, so does the button) with only 1cm copper wire, tutorial: here.
  • if its still not working properly, your headset might be broken.

Boot Time is very long

• if "optimizing app 1/n" is shown, see section "Common Problems" here Installing Lollipop
• if that doesn't help: DO NOT reboot your phone.