Stutter After Motherboard Replacement
Recently, my SGS2 Motherboard(+Battery Socket) got replaced by Samsung due to several issues (very quick battery drain when low battery and crappy home button behaviour etc.) Next day, I started to experience a strange issue, significant stutter, choppiness.
The stuttering begins mostly after enabling Mobile Data, or WiFi and when below 15% battery, but launching an app can also trigger it, even when WiFi and Mobile Data are disabled. Nothing but Lock&Unlock ends the stutter. But it sometimes starts again after a while. The stutter doesn't get triggered when the phone is charging, even with very low battery.
Tried Wipe Data/Factory Reset several times, used another Battery/Adapter, updated the version and then downgraded to a version I've been using before the replacement.(JB)
Didn't try rooting/installing any ROM so far since I might send the phone back although I have a jig.
Any help would be greatly appreciated.