I charged it overnight to 100 %. This morning I was trying to activate viber. It turned off, and keeps turning back on. That happend after 10 minutex max. After that I plugged it in to charge and the batterij level was at 36 %. So in a few minutes time my battery goes from 100 % to 36%. After restarting it quite a few times yesterday. The battery stats changed. The screen is no longer at 80 % but now it is 42%. I removed it from the charger to see how long it will hold. I tried keeping it running so that it can discharge on it's own but that didn't happen yet.
What I meant with: "keeps discharging when I unplug it from the wall outlet." is that when removing it from the outlet I use the phone for maybe 5 minutes and then it turns on. It kees doing that: turning on and off on it's own. But when I plug it in again on the charger it stays on. Only then I see that my battery as dropped from 100% to 36% procent.
So now I can only use my phone when plugged in.
This is the printscreen. Hope you can read it:
