Battery Saver helps you keep going on a low battery by automatically restricting mobile data until the next charge. Some apps and services won’t work unless you’re connected to a Wi‑Fi network.
Open quick settings and touch
.
When the phone is in Battery Saver mode, the top (status bar) and bottom (navigation buttons) of the home screen turn orange.
When the phone is in Battery Saver mode, the top (status bar) of the home screen turns orange.