The Low Battery Mode in iOS and iPadOS can eke out a lot more usable time when your charge runs low. It’s a big enhancement that turns itself on automatically. When Low Battery Mode engages, a number of background activities shut down, including sync and email checking.
When your battery tops 80 percent charge or you disable Low Battery Mode via Settings > Battery, operations should go back to normal.
Some readers find that iCloud Photos remains paused, however. When they open the Photos app, a message appears that reads, “iCloud Photos updates are paused to save battery. Would you like to resume updates for one hour?” A button labeled Resume Updates can be tapped, but the only other option is Cancel.
