need 3g/battery app

[airkenada]

im looking for an app that will enable 3g when screen is on and disable 3g when screen is off...just to save some battery when not using it

 

[Kancerstick]

i use juice defender, and it works perfectly for what you described

 

[viebroccoli]

im looking for an app that will enable 3g when screen is on and disable 3g when screen is off...just to save some battery when not using it

If you mean enable 4G when the screen is on and disable 4G when the screen is off, then that feature is already built into the phone. Whenever the phone is in "sleep" mode, it rolls back to 3G, and only enables 4G once the screen is turned back on.

 

[whoelse]

im looking for an app that will enable 3g when screen is on and disable 3g when screen is off...just to save some battery when not using it

Does this meet your requirement?
3GBattery|Google Play