OnePlus Switch

Plus Switch is an official OnePlus app that enables you to quickly and easily transfer all your data and information to another OnePlus device. Move your contacts, text messages, calling history, calendar, photos, videos, music, and app files to a new device in a matter of minutes. Although the main purpose of One Plus Switch is move data from one device to another, that's not all it can do. This app can also back up all of the data on your device into a simple compressed file that can easily be stored.