Phone dead after a week of usage.
I have used the phone for less than a week. Two correct charge cycles. Nothing has happened to it. Now it stopped detecting charger present. I tried rebooting the phone and now it wont turn on. (The battery level was 15% earlier). Tried holding different combinations of hw buttons for up to 30 seconds. Screen black, no notification LED activity at all. So I guess my problem with no multi-user support just solved itself.
I will leave it under charger for a day or so and see what happens. Otherwise I guess returning it... :/