Buttons - LG Optimus F3 User Manual

5. Select the Restrict background data check box.
Minimize use of third party applications
1. From any Home screen, tap the Menu key.
2. Tap System settings.
3. Scroll to 'DEVICE,' and then tap Apps.
4. Select the application you want to edit.
5. Tap Disable to turn off the application.
Note: You can tap Uninstall instead to completely remove the application.
Toggle from 4G to 2G
1. From any Home screen, tap the Menu key.
2. Tap System settings.
3. Tap Tethering & Networks.
4. Scroll down to and tap Mobile networks.
5. Select or clear the Use only 2G networks check box.
Update to the latest software
1. From any Home screen, tap the Menu key.
2. Tap System settings.
3. Scroll down to 'SYSTEM,' and then tap About phone.
4. Tap System updates.
5. Tap Check now.
6. Follow any additional prompts.
Set device to sleep when unused

Press and then quickly release the Power key to set the screen to sleep mode.

To activate the screen, press and then quickly release the Power key again.

Buttons

To find buttons and what they do, refer to the following: