1. erotavlas_turbo's Avatar
    I have a S4 VE i9515, suddenly the back and option keys have been disabled and I'm not able to use them any more. I did not make any change or software update.
    I tried to restore the phone via default setting and via recovery without success. I searched on the web, but the only solution that I found is to install an app as https://play.google.com/store/apps/details?id=com.phoenixstudios.aiogestures.
    Finally, I tried to install a custom ROM in particular the latest unofficial version of lineage OS https://forum.xda-developers.com/galaxy-s4/i9505-develop/rom-cm14-1-galaxy-s4-jfvelte-gt-i9515-t3534552 that works well, but it did not solve the problem of keys.
    Do you have any suggestions?
    Thank you
    04-05-2017 04:25 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! The buttons themselves might have failed. If they're also nonfunctional in Safe Mode, then take the phone to a repair shop. https://support.t-mobile.com/docs/DOC-27781
    04-05-2017 02:15 PM

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