topic Re: Unable to do factory reset in Z Series

Unable to do factory reset

Microbe — Sun, 01 Nov 2015 13:26:15 GMT

My phone is acting very weird - google play doesn't work, screen lock works randomly, it's very slow, battery drains fast etc. So I wanted to do a factory reset. Unfortunately I haven't found a method that would work.

- nothing happens if I try through settings

- I never reach recovery mode with any key combination when starting up the phone

- The phone is not found when I connect it with USB to computer so PCC is not an option. Using original cable that came with phone.

- I found several codes that should do factory reset but they don't work

I haven't installed any new apps for ages so I have no idea what could be the problem. I could even guess it's a virus or something similar.

I could access safe mode, but doing things there doesn't help either.

Thanks!

Re: Unable to do factory reset

_alexdon_ — Sun, 01 Nov 2015 13:32:40 GMT

So if you go to settings - backup and restore - factory data reset, nothing happens? What about PC companion, why do you have problems connecting?

Re: Unable to do factory reset

Microbe — Sun, 01 Nov 2015 13:36:06 GMT

Hi, thanks for your answer.

If I go to settings and press the "erase everything", it simply does nothing. Nothing happens.

I cannot tell you why I can't connect via USB - nothing just happens and the device is never found. I've tried a bit different positions with the cable in case it's a connection issue, but doesn't help.

Re: Unable to do factory reset

_alexdon_ — Sun, 01 Nov 2015 13:39:07 GMT

Can you try to change connection mode to MTP?

Re: Unable to do factory reset

Microbe — Sun, 01 Nov 2015 13:48:36 GMT

Tried MTP, same thing.

Noticed that it doesn't even charge while using USB. I know my USB ports are ok (and tried all of them).

Re: Unable to do factory reset

_alexdon_ — Sun, 01 Nov 2015 13:51:00 GMT

Can you check this topic?

/t5/FAQ/USB-connection-problems/m-p/348074#U348074

Re: Unable to do factory reset

Microbe — Sun, 01 Nov 2015 14:06:37 GMT

Thanks.

Checked those instructions. I tried another computer but don't have another cable - this cable is usually working just fine in other usage so it's probably not that.

Re: Unable to do factory reset

_alexdon_ — Sun, 01 Nov 2015 14:17:39 GMT

So with another computer, you encountered the same issue? Other cable could be an option too.

Re: Unable to do factory reset

Microbe — Sun, 01 Nov 2015 18:24:24 GMT

I tried with another computer and it didn't help. Also another cable didn't help (borrowed from a friend).

When I was trying these things the battery was about 80%. So I kinda gave up and left it charging, and when I looked at it again it had performed a factory reset by itself. Don't ask me how that happened - I didn't touch it. But it seems to work ok now, so all's great.

Thanks a lot for the speedy help and support!

Re: Unable to do factory reset

_alexdon_ — Sun, 01 Nov 2015 23:31:18 GMT

Awesome, perhaps it needed a specific battery percentage. But good news.