For Power Saver versions 1.2 or below.
The differences of battery modes may vary with models and/or versions. To check your Power Saver’s version, tap and hold 
from the All apps screen then drag it to App info on the top of the Home screen.
- Performance Mode
This mode uses the device to its maximum capability, providing the highest performance, but using the most power.
- Balanced Mode
This mode takes a balanced approach in managing battery life and performance. The screen's brightness will be automatically dimmed by a small amount to preserve battery life. Your device’s battery life will be longer than in Performance mode.
- Smart-saving mode
Customize your own settings by tapping the Settings button. Settings include Screen Brightness, Push notifications, and Standby options.
- Ultra-saving mode
Maximizes battery life by disabling some background processes and choosing which ones you still want to process.
Note: Instant messages from providers such as Facebook, Line, etc., e-mails, location, or other notifications will not be received unless the app is specifically launched. Vibrate alerts will be disabled and the network connection will also be disconnected when the screen is off.
