If I put it on only when plugged in, it should turn WiFi off when its in sleep mode right? I tried it and checked my phone in the middle of the night and saw WiFi on still. Did anyone else get this to work?
Lol I forgot to mention a major detail, turn off mobile data while you try that. If your wifi does turn off, your mobile data will finish the download. Sorry!
You can also try clearing system cache via recovery.