Good phone until...
My P2 started to freeze and restarted at random moments. OK. Sometimes the power buttom did not seem to work after the phone had shut down. Last month or so the phone started to show sceen at startup (prepairing android ~ or something like that) and it usualy took 10 - 30 minutes to start.
Now the phone seems to be totaly dead. Also tryed the tricks mentioned up here.
Your seller will manage warranty terms. You have to contact him to have your device replaced, if still covered by warranty.