How to save your battery life on your iphone

Slide up on the screen and bring up this menu...

Turn the brightness down

The sound bar is the second one

Turn this down as well if your not using it

Top right corner is the screen rotation lock

Turn this off

Double click the home button to bring this menu up, delete the page by sliding the square up, dont worry this doesn't delete the app...

Like so ...

This should help save your memory :)