As we all know that OPPO K1 is running Android OS. You need to use Android Data Recovery to do that. It can scan your phone and SD card deeply to find the deleted data on your phone. You can preview them before recovering. Learn how to recover deleted contacts from OPPO K1. Besides contacts, you can also recover other data, including messages, photos, videos, call logs, Whatsapp messages, music, books and other document files from your OPPO smart phone.