Disable background data for your non-essential apps.

Many apps run in the background, even when you’re not using them. This makes sense for things like email and social media, where you might want to know the minute you get a new message or comment, but do you really need your games, notes, and music players gobbling up battery resources 24/7?

“With iOS, you can turn off background data on an app-by-app basis. Go to Settings—>General—>Background App Refresh, and select apps to turn off.

“With Android, you can “restrict background data” for each app. Go to Settings—>Data usage. Tap on your app of choice, then scroll to the bottom to restrict background data on cellular networks. (Note that this setting can also save you from accidentally going over your data plan threshold.)” – Ben Taylor, 15 Tricks For Getting Way Better Smartphone Battery Life, TIME Magazine