If the "Chinese" version of your phone has a locked language or software errors, you may need to "flash" it with a new firmware: Nokia Manual N8

: Most clones do not run Symbian. Instead, they use a basic Java-based OS or an early version of Android that has been modified to look like Symbian. Hardware Differences :

: A sliding switch on the right side to lock/unlock the screen and keys.

If your device is a Chinese "clone," it will differ significantly from the original:

(even if it has Chinese firmware), the core operations are as follows: : Find the SIM card slot on the left side of the device. Open the plastic protective cover.

For a complete manual, you can view the Official Nokia N8-00 Russian User Guide or the English version . Chinese Clone (Counterfeit)