Hello
I have Xperia Z5 which was running latest Marshmallow fw but had some problems with battery consumption.
I did a factory reset as I hoped it would solve the problem. But after the reset I couldn't remember the right gmail password so I chose to reset it.
Everything went well, I got new password but I still couldn't log in to my phone(it says "please sign in using one of the owner's accounts for this device"). I did some research and it seemed that I had to have the same password I used on phone while it was active(before resetting it). I did occasionally find that password and I've set it back(had to reset password a 100 times).
Still, I can't log in as I'm being displayed the same message (please sign in using one of the owner's accounts for this device).
I've also found that I have to wait for 72 hours after last password change to be able to log in.
Is that true or I've ruined my phone?
Thanks,
Vanja