I have an A15 that I have owned for slightly less than one year. Its battery is having difficulty retaining a charge. Last night I found it was at 15% just before bedtime. I charged it to 51%. Eight hours later, when I got up, it was down to 15% again. I usually try to avoid charging it to more than 75 to 80% and have tried to take care of the battery. I have previously owned a J7V Samsung smart phone, and never had a problem like this with it.
I was able to resolve the problem. The first step was turning off Bluetooth. When I go to bed, I place my phone on the bedside table next to the cpap machine, as the phone serves as an alarm clock. My best guess is that Cpap's active bluetooth was "pinging" my A15's bluetooth. This hypothesis may be a stretch, so the next thing I did was to simply shut down and restart my phone. Probably this was the best commonsense solution.
