On boot my mobile phone goes to the lockscreen background but doesn't show the unlock symbol.
I've tried dragging the button blind but it's not just that it's not visible, it's not there. Neither does the "emergency dial" button show. The rest of the UI shows; the time, alert bar with wifi symbols and such. I've also tried using the Google Android device manager (ADM) code reset, the numbers don't show to allow input of the code; Safe Mode doesn't show the numbers either.
The phone is an Acer Liquid E3 (E380) running Android 4.4.2 (Kitkat?) and somehow I've managed to remove the lockscreen - I think perhaps it was with [correction:] System App Remover when trying to remove wallpapers after rooting with Kingo Root; but I had just changed to allow voice unlock so it may have been that.
How can I unlock if the buttons don't show? I know the passcode and the voice unlock commands.
The phone is online, Wifi is activated. When entering Safe Mode it showed it was downloading something, for example.
Developer mode is active but I think that USB debug is off (
adb devices shows the device but says "offline" next to it).
I can access the recovery menu (power + volume-up at boot) - is it possible to "adb sideload" something that will help (like a replacement lockscreen?). Like I said it's not the code I have problems with, just the UI not showing.
I've seen use of
adb shell input text 1234 to enter codes, but presumably this needs USB debug to be enabled; can I force send text that way? If I plug in a USB keyboard is there a button press that operates the "unlock" onscreen button?
Occasionally when I bring up the power off menu the number keys will show underneath (suggesting the software to show them is installed still) but touching the screen dismisses them with the menu leaving me on the broken lockscreen.
Any suggestions other than a factory reset? Thanks.
Edit: sometimes the voice unlock screen is shown behind the "power off" dialog, again it is dismissed as soon as one closes the dialog.
Edit2: I did a full data wipe [ie factory reset], ensured PIN access was set, used a different theme, etc., am now in same position but have managed to enable USB debug. However, using
adb shell to provide input doesn't unlock, it will turn screen on but entry of unlock code appears to fail.
Edit3: tried again with ADM, it puts up a black lockscreen with a padlock symbol that looks like a drag-button but I can't interact with it. Also since wiping I put a widget (messaging) on the lockscreen which I can interact with.