The data of the old phone is still there. Cloning the phone is equivalent to copying the data on the old phone and putting it on the new phone, so it will not affect the data of the old phone.
After the phone is cloned, the call records, text messages, contacts, and media files of the old phone will be merged into the new phone. If the same application exists on the new phone and the old phone, the application data of the old phone will be overwritten on the new phone after the cloning. Contacts, messages, call records, pictures, videos, music, and documents will not be overwritten; that is, the same data on the old and new phones will be merged, and different data will be retained on the new phone at the same time.