Samsung Galaxy Light MetroPCS SGH-T399RNATMB Manual

To perform a factory reset, go to Settings > Backup and reset > Factory data reset > Reset device. Confirm by tapping Erase everything. Ensure you back up any important data as this will delete all data from your phone.
Check the charger and USB cable for damage. Try using a different charger or cable. Ensure the charging port is clean and free from debris. If the issue persists, the battery or charging port may need to be inspected by a professional.
Reduce screen brightness, disable unnecessary background apps, turn off Bluetooth and Wi-Fi when not in use, and enable Battery Saver mode in Settings.
Clear cache by going to Settings > Storage > Cached data, and tap OK to clear it. Consider uninstalling unused apps and restarting the device. If issues persist, a factory reset may be needed.
Go to Settings > About device > Software update > Check for updates. If an update is available, follow the on-screen instructions to download and install it. Ensure your device is charged and connected to Wi-Fi.
Yes, the Samsung Galaxy Light supports microSD cards up to 64GB. Insert the card into the microSD slot located beneath the back cover of the phone.
To take a screenshot, press and hold the Power and Home buttons simultaneously until you hear a shutter sound or see a screen capture animation. The screenshot will be saved in the Gallery.
Ensure the device is charged. Try performing a hard reset by holding down the Power and Volume Down buttons for about 10 seconds. If the device still doesn't turn on, it may require professional repair.
Connect your phone to the computer using a USB cable. Swipe down from the top of the screen to access the notification panel, then select 'USB for file transfer'. Choose 'File Transfer' and access your phone's storage from the computer.
Go to Settings > About device. Tap 'Build number' seven times until you see a message that Developer Options are enabled. Access Developer Options from the main Settings menu.