Can you DJ with your phone?

Yes you can

DJing with a computer or USB drive has been an industry standard for many years. Recently DJing using smart devices, such as iOS and Android-based systems, is becoming an alternative less expensive option. Brands like Algoriddm and DJay have brought a professional feel with no computer needed. There is a great selection of controllers for DJing with smartphones and tablets out there with solutions for beginners and advanced users.