HTC desire 530 User Manual page 134

134 Power and storage management
2. Tap Power.
3. Tap Battery optimization.
4. Tap Not optimized All apps to see the complete list of apps.
5. To turn off battery optimization in an app, tap the app name, and then tap
Don't optimize Done.
Repeat this process to turn off optimization in other apps.
To filter the list and see which apps have battery optimization disabled, tap All apps
Not optimized.
Extreme power saving mode
In times when you don't need to use much of your phone, turn Extreme power saving
mode on to extend battery life longer. In this mode, standby time can last longer than
usual, and you can only use the most basic functions such as phone calls, text
messaging, and email.
1. From the Home screen, tap
2. Tap Power.
3. Tap the Extreme power saving mode On/Off switch to turn extreme power
saving mode on or off.
If you want to set when to automatically switch this mode on, tap Extreme
power saving mode, select the Automatically turn on extreme power saving
mode option, and select a battery level.
Under More information, tap Learn more for details on how Extreme power saving
mode maximizes battery life.
, and then find and tap Settings.