Using your iPhone 12 Pro Max is easy. To take photos, just open the camera app and use the different lenses like Ultra Wide, Wide, and Telephoto. You can also record 4K videos at various frame rates. For multitasking, simply swipe up from the bottom of the screen and switch between apps. When it comes to charging, use the recommended Apple charger to keep your battery healthy. Remember to keep your phone away from extreme temperatures as it can affect the battery life. Also, avoid exposing it to water for long periods, even though it has IP68 water resistance. To clean your phone, use a soft, lint - free cloth. If you want to expand your storage, you can use iCloud. Enjoy your iPhone 12 Pro Max and all its amazing features!