Samsung Galaxy J7 Virgin Mobile SM-J700PZWAVMU Manual

To perform a factory reset, go to Settings > Backup and Reset > Factory Data Reset > Reset Device. Confirm by selecting Erase Everything. Ensure that all important data is backed up as this will erase all data on the phone.
Start by restarting your phone and router. Ensure Wi-Fi is enabled on the phone. If issues persist, forget the network in Wi-Fi settings and reconnect by entering the password again.
Check for power-hungry apps in Settings > Battery. Consider reducing screen brightness, disabling background apps, and turning off location services when not needed.
Turn off the phone. Press and hold the Volume Up, Home, and Power buttons simultaneously. Release all buttons when the Samsung logo appears. Use the volume buttons to navigate to 'Wipe Cache Partition' and confirm with the Power button.
Clear app caches and uninstall unnecessary apps. Consider performing a factory reset if the problem persists. Also, ensure the device software is up to date.
Go to Settings > About Device and tap on 'Build Number' seven times until you see "Developer mode has been enabled". Developer options will now appear in the Settings menu.
Press and hold the Power and Home buttons simultaneously until you see a flash and hear a shutter sound, indicating the screenshot has been taken.
Go to Settings > About Device > Software Update > Check for Updates. Follow the prompts to download and install any available updates.
Try using a different charging cable and adapter. Clean the charging port gently with a dry toothbrush. If the issue persists, consider replacing the battery or contacting a professional service.
Swipe down from the top of the screen to access quick settings and tap on 'Do Not Disturb'. Alternatively, go to Settings > Sounds and Notifications > Do Not Disturb to configure settings.