Samsung S4 mini Shuts off during the night
I've been having this issue for about a month now. My S4 mini will shut off during the night, every 4-5 days, even though it has enough battery life. I've tried running the phone in Safe mode for a week and have cleared the cache, but no resolve. When I find it turned off in the morning I can turn it back on without any issues, I don't have to insert the charging cable to turn it back on. I only have one 3rd party app installed (Skype) which I rarely use. I've had the phone for a few months and have only recently noticed this happening.
Anyone have any idea whether this is battery or phone related ? Would a factory reset help the situation ? I'm trying to avoid the latter, if at all possible.
Thank you very much for any suggestions you might be able to offer !