Sadly the fix has only been temporary. After days of getting my phone back to how it was before the reset.
A few days after this I started getting lag when selecting apps, using keyboard and so in. I began using the stock alarm clock again but it has now begun to snooze for 11, or 12 minutes instead of 10.
The screen freezes, controls become unresponsive and will either sort itself out after after a short period or it reboots itself.
Yesterday the phone began to vibrate rhythmically for no apparent reason. The screen locked on the app I was using. When eventually it worked again, it turned out to be a missed call. There was no notification.
Also I don't use vibrate just a ringtone and the volume level was OK.
The caller rang again, it only vibrated, and I could not answer the call as the screen was unresponsive.
I found out who called an rang them back. After about 30 seconds, the phone went quiet, then I heard ringing sound in ear microphone. I was now talking to someone else altogether!
The phone had put the original person in hold then dialled my mother's number with any input from me whatsoever.
And yes, the camera still comes on occasionally as it did before.
I never experienced problems of this nature with my old z1 compact, but it seems I'm not alone alone in experiencing weird software issues according to this forum and many others.
Please don't suggest a full factory reset again. Despite using back up and restore, phones never return to their previous state and so many personal settings and preferences are lost.
