I'm sure someone on here is smart with mobile phones ??
Have a Samsung J1, only use it for incoming calls and sending odd text. Is on a $70/year plan that entails no data.
Suddenly started using the battery , now instead of lasting a week, 12hrs is normal.
Nothing is enabled....no wifi, bluetooth, flight mode, no live wallpaper etc. Disabled or removed or uninstalled anything I could get my hands on. Put a new battery in....no diff.
Found developer options....no idea what to do there, but I did limit background processes to 4.
Done a factory reset......
If it was a phone that I used, like the wifes S5, I'd just look around for another, but for a work phone that gets used maybe twice a week, I'm hesitant to throw it in the bin yet ..
Is it Samsung using power for something new that I don't know about ??