How To Conserve Your Phone Battery. To turn on Auto-Brightness in iOS 13 and later open the Settings app go to Accessibility Display Text Size then scroll down and tap Auto-Brightness. A battery dwelling in a full state-of-charge exposed to a high temperature is the worst of all worlds and the number one thing to avoid when charging your phone.
To reduce the brightness you need to open the Control Center swipe down from the top-right on iPhones with Face ID or up from the bottom if your iPhone has a Home button and drag down the brightness slider. Greenify saves your battery life by pushing apps into a kinda hibernation mode and stop them. On the next screen tap on 30 seconds or 1 Minute.
The brighter the display on your Android Phone the more battery it consumes.
Turn Auto-Brightness on to save energy because your screen will need to use less power in dark places. To reduce the brightness you need to open the Control Center swipe down from the top-right on iPhones with Face ID or up from the bottom if your iPhone has a Home button and drag down the brightness slider. Use a black background if you have an AMOLED screen. If your iPhones battery life is particularly poor it might be time to replace it.
