Instruction
1
Have phones with a physical keyboard unlocking is usually done in the effect, similar to its inclusion. It is done by pressing certain keys in a special order, or by pressing and holding one of them. It can be the keys *, #, and press "Menu". Consecutive pressing two or more keys most securely protect the keyboard from unwanted unlocking.
2
The phones touch screen and keyboard, as such, no. It is the role of the screen. If the phone still has a few buttons (of the package and reject the call), they are locked together with the screen. To unlock these phones often need to press and hold a certain part of the screen that looks like a button (often with an icon in the form of a castle). This method allows quite well to protect the phone from unwanted unlocking.
3
In some models of touch screen phones a more serious way to unlock the keyboard. It lies in the fact that the screen needs to "draw" a polyline to a specific shape. This method has the highest reliability, as it is guaranteed to eliminate unwanted clicks.