One key to solve the problem of your replacement machine! No more worry about changing machine! The two mobile phones are seamlessly interconnected and can be operated in batches. One-click transfer of photos, videos, contacts, calendars, etc. from the old mobile phone to the new mobile phone. No data cable is needed, no computer is needed, so you can easily change your phone with one key! It has the following characteristics: 1. One-key switch Whether it is contact information in the address book, or important data such as photos, videos, files, etc., you can migrate data from your old phone to a new phone with one click, making it easier and more convenient to change your phone. 2. Simple operation It can be used directly by installing on new and old mobile phones, and the transmission speed is much faster than Bluetooth, and data migration is more convenient. 3. Convenient transmission No data cable connection is required, the short-distance mobile phone is directly connected, and the data migration can be done with one key.