4 quick software tweaks to extend your phone’s battery life by 30%

Give your iPhone or Android a fighting chance to make it to bedtime on a single charge.

Modern smartphones don’t run out of juice midafternoon because their batteries are defective. They run out because dozens of invisible background services are constantly running full throttle in your pocket. Apps are pinging GPS satellites, pulling fresh data over weak cellular connections, and redrawing high-resolution screens 120 times per second.