General styles have locks, that is, linear rotary switches, which generally rotate to the right! If there is no delivery key, you can choose to try it with a tool similar to a screwdriver. It will definitely open! 1. Ferrari, turn the lock to the lower middle position and open it; 2. Signature version, rotate the lock in the upper middle position and open it; 3. clamshell version, which can be opened by rotating the lock at the top of the back; Note: both the signature version and the gem dragon are equipped with SIM cards, with buttons on the left side of the screen and SIM card holder on the top! For other questions, please leave a message1120 44511or look at the space pictures. There is an introduction!