in nem k700 forum gibts diese infos:
The changelog for the R2E011 firmware is as follow...
As recommended by SE, this software released is mainly to improve the standby time of the phone by 15% to 20%. (Estimated guide)
Software upgrade R2E011 to improved battery performance.
-Backlight off function from 40 to 20 seconds timed.
-Animated themes discontinued when backlight is off.
-Dimming backlight after 10 seconds (call, FM radio, mp3).
Please turn on the power save mode on the phone for better battery performance.
Go to setting
Go to Light
Select “power save” mode.