My Verizon GS3 SCH-I535 turns wifi off when the screen is off, and reconnects when I turn the screen back on. I'd like to keep wifi on all the time to keep data usage down. I tried the following: 1. settings > wifi > menu > advanced > keep wifi on during sleep > always 2. dialing *#0011# didn't work for me, so I downloaded the android service mode app to turn off wifi power save mode Even after doing both, the problem is not solved. Does anyone know how to keep wifi on during sleep? Thanks in advance.