Guys I'm sure you will all find this useful;)
Keypad Lock
The Baofeng UV-5R features a keypad lock that locks out all keys except for the three side keys.
To enable or disable the keypad lock, press and hold the key for about two seconds.
You can also enable so that the radio automatically locks the keypad after ten seconds from the menu, see Chapter 4, Working the menu system and ??? in Appendix B, Menu definitions for details.