I upgraded the phone OTA today. I didn't realize this was the Android 6 upgrade as otherwise I would have prepared better (e.g. backup). Anyway, after rebooting the phone (a couple of times) I have an issue with the phone "sporadically" not charging. In power off, charging works fine. When I reboot, charging seems initially OK. Then - and I am not sure what exactly triggers it - the phone stops charging (a USB Ampermeter shows 0.07A ... less than trickle charge) while the battery level is only at 40%. There is no temperature issue either. Rebooting the phone (some times) restores charging again ... ?
I didn't find the right solution from the Internet.