3g off on weekday
In order to save battery at daytime, switch 3g to edge
Wifi on when wifi available
When network found, automatic turn on wifi
Screen filter at night
Dimming screen at night time. You will not heart yourself
wifi enable if power connect
wifi enable when power. connected
Wifi off when disconnected
Don't waste battery, just disable wifi after disconnect 3 mins
Gps on when open igo
One step to complete using map