Low Power Mode reduces the amount of power that your iPhone uses when the battery gets low. To turn Low Power Mode on or off, go to Settings > Battery. ... When Low Power Mode is on, your iPhone will last longer before you need to charge it, but some features might take longer to update or complete.

Does battery saver actually work iPhone?

In our tests, both iPhones and Android smartphones used significantly less battery power with battery-saver mode enabled—as much as 54 percent, depending on the phone we used. While both airplane mode and low-power mode conserve battery life, they do so at a heavy price.

Is it OK to keep iPhone on low power mode?

It is absolutely safe, although remember that Low Power Mode will turn off automatically if battery level reaches 80% while charging. Also, don't forget that LPM temporarily disables some of the phone's features and services. You can learn more about the iPhone Low Power Mode from this article.