iPhone 4s - phone

[learninmypc]

Simply meaning mine is an iPhone 4s but no phone number associated with it so I'd like to know what I can turn off to save battery life?
ALL I use it for now is a time piece & camera/video. I have only 2 apps on it. TIA

 

[learninmypc]

I guess its a dumb question to ask since most users use theirs to to call/socialize. I just hope I did mine correctly

 

[Ninny]

I'd still put it on flight mode in case it is searching for network/wifi and draining the battery. I also turn my display backlight down when trying to save battery

 

[learninmypc]

Sorry, mine stays out of airplane mode but thank you.