Contacts Manager-Fast app analytics for December 27

* Use international cutting-edge artificial intelligence algorithms * ======Smart management address book====== [Backup Management]: Export vCard from the phone address book with one click, sync back to the phone at any time, don’t worry about changing phones! [Quick arrangement]: It is more convenient to change the machine. Intelligently merge duplicate contacts, save worry and effort [Smart Detection]: Automatically detect expired numbers and frequently used numbers, making it more convenient to make calls [Group SMS]: Send holiday blessing SMS in groups, the app does not charge fees [Batch delete]: Delete contacts in batch with one key