Why does my phone shuts down or get stuck in boot loop?
Hallo there, I'm looking for couple of hints to clarify the situation.
My phone started to randomly shut itself down and then either working again (showing battery status properly) or starting up and just after booting into system the battery is shown to be 0% and it shuts down immediatly after or its just looping in boot. After some reaserch I decided to open the case and reconnect the battery. It does in most cases allow me to boot again to the phone directly after (skipping the loop if was stuck there) but it doesnt fix the problem.
One very important thing - this issue happens when phone is moved or shaked, it works perfectly as long as it lays peacefuly on the table. So I assume that it is some sort of hardware issue. (I did factory reset already - no change)
Can battery replacement fix this? May it be purely motherboard issue besides the battery port area? or rather the port for battery is somehow disfunctional? If so how to aproach troubleshooting and fixing such a filigrane part? (Its unison phone, battery has a cable connecting to MB with tiny 6 wired plug)
Huge thanks in advance for all willing to spare some minutes on the topic! :)