Using your Apple iPhone 8 Plus is easy. To turn it on, press and hold the side button. You can unlock it by placing your finger on the Touch ID sensor. For taking photos, open the Camera app. Use the rear dual - camera system to switch between wide and telephoto lenses for different perspectives. When using the front - facing camera, the Retina Flash will light up in low - light situations. For charging, you can use the included cable or a wireless charger. As for maintenance, keep the screen clean with a soft, dry cloth. Avoid exposing the phone to extreme temperatures or moisture. If you want to reset the phone, go to Settings, then General, and select Reset. Always make sure to back up your data regularly to avoid data loss.