Lenovo TAB3 8 TB3–850F User Guide

To perform a factory reset, go to Settings > Backup & reset > Factory data reset. Follow the prompts to complete the reset process. Ensure you back up important data before proceeding as this will erase all data on the device.
To extend battery life, reduce screen brightness, turn off background apps, disable wireless connections when not in use, and use battery saver mode available in the settings.
Try charging the tablet for at least 30 minutes before attempting to turn it on again. If it still doesn't work, perform a hard reset by holding the power button for 10-15 seconds.
Go to Settings > Wi-Fi, turn on Wi-Fi, and select the network you wish to connect to. Enter the password if prompted and tap Connect.
Uninstall unused apps, clear cache data, move files to a microSD card or cloud storage, and delete unnecessary files or media.
To update the software, go to Settings > About tablet > System updates. If an update is available, follow the prompts to download and install it. Make sure the tablet is charged or connected to a charger.
Press and hold the Power button and Volume Down button simultaneously for a few seconds until the screen flashes, indicating a screenshot has been taken.
Close unnecessary apps running in the background, clear the cache, and consider restarting the device. If the issue persists, check for software updates or perform a factory reset after backing up data.
Connect the tablet to your computer using a USB cable. On the tablet, select 'File Transfer' or 'MTP' mode. Your computer should recognize the device, allowing you to transfer files.
Go to Settings > About tablet and tap 'Build number' seven times. This will unlock Developer Options, which will appear in the main settings menu.