Originally Posted by chanchan05
Did you turn on power saver in the settings? Activating that or installing battery savers turn off data when phone locks to conserve power. Basically you have to choose between longer battery life or receiving emails and internet messages on time.
I have power saving enabled on my GS4 and still get alerts on inbound mail, text msgs, etc.
Are you sure about this?
I used to use JD on my S720C and learned a lot about what works and doesn't work when the 3g radio is disabled! I learned to let JD manage wifi and left 3g enabled. With the GS4, I haven't bothered with a battery saving app.