Sony H8216 Xperia XZ2 User's Guide

To take a screenshot, press and hold the power button and the volume down button simultaneously until you hear a shutter sound or see a visual confirmation on your screen.
First, check if the charging cable and adapter are working with another device. If they are, try cleaning the charging port of your phone with compressed air. If the problem persists, restart your device or try charging from a different power source.
Go to Settings > System > Reset > Factory data reset. Follow the on-screen instructions to complete the reset process. Make sure to back up important data as this process will erase all data on the device.
Overheating can occur due to prolonged use of resource-intensive apps, prolonged screen time, or exposure to high ambient temperatures. Allow the device to cool down, close unnecessary apps, and keep it out of direct sunlight.
To extend battery life, reduce screen brightness, limit background app activity, disable location services when not needed, and enable battery saver mode from Settings > Battery > Battery Saver.
First, restart your phone and the Wi-Fi router. If the issue persists, forget the Wi-Fi network on your phone and reconnect by entering the password again. Ensure that your software is up to date.
Go to Settings > System > Software update. Tap on 'Check for updates' and follow the instructions to download and install any available updates.
Ensure your camera app is updated to the latest version. Clean the camera lens with a microfiber cloth, use good lighting, and explore the manual mode settings for better control over the camera functions.
Go to Settings > Security & location > Fingerprint. Follow the on-screen instructions to register your fingerprint. Ensure the sensor area is clean and dry for optimal performance.
Clear the cache and data of the problematic apps via Settings > Apps & notifications. Ensure that both the app and your device OS are updated to the latest version. If the problem continues, reinstall the app.