Louis Koo and Miriam Yeung use Z 10 and 9900.

Gao Yuanyuan, Vic Zhou used 9900.

Lin Xue used 9790.

Blackberry, the name of the mobile phone used by US President Barack Obama, is a secret mobile phone specially made by RIM for the US National Security Agency. Powerful, especially strong encryption.

Blackberry Z 10 is a full touch-screen mobile phone with L series BB 10 system. It is a 4.2-inch full touch screen device with a screen resolution of 1280x768 pixels, and the pixel per inch reaches 356ppi. * * Available in black and white, it entered the American market in March 20 13.