If your priority is making your battery last throughout the day, you'll probably want to keep this feature off. Repeatedly charging your iPhone to 100% and draining it down to zero can wear out the ...

That’s why I’m always hunting for ways to make my older iPhone feel faster—tweaking a few quick settings has made all the difference.

Android: Swipe down from the top of your screen -- to access the Quick Settings panel -- and then tap the Airplane mode icon.