I’m experiencing a problem with my Fairphone 2 that seems to be related to the battery.
A few days ago, the phone was completely dead in the morning although I had put it on the charger over night. I also did not manage to turn the phone on. After some googling, it seemed like the battery was deeply discharged. So I followed the manual on Fairphone’s website to “kickstart” the battery (removing it for 1 h, then charging it for a few hours). However, this did not resolve the issue at all.
While charging, the phone’s led first flashes red and after a few minutes (maybe 2-3) it is constantly red. Then some more minutes later (20-30) the device seems to try to boot up, and the Fairphone logo appears on the screen. At the same time the led is off. Just after the blue banner-thingy starts pulsing over the screen, the screen goes black again, the led starts flashing red, and the cycle starts over.
To me, it seems like the phone gets just enough power to start booting and then during the start-up it stops charging for whatever reason, draining the little bit of power that has gone into the battery. If this is the case, is there any way to prevent the phone from booting while charging or to charge the battery outside the device?
I also tried to boot the phone without the battery (but the charger attached). Then it seems to start the booting process and stops after a few seconds, which apparently is a normal behaviour. That tells me that the rest of the hardware is probably mostly fine. Is there any other way to figure out if the problem is actually the battery or something else?
Or what else could be done?
I’m not sure if this is related but already the day before this started, I had noticed some strange behaviour, namely that the phone randomly rebooted. I manually turned it off and on which seemed to resolve the issue so I did not bother about it again.
I’d be happy about any help.