Android secret & short codes

To check General information of mobile like phone version check battery and other(memory) info USE
*#*#4636#*#*

To reset factory settings data like google account cookies system application to default settings USE
*#*#7780#*#* Phone should be restarted

To cancel this operation USE
*2767*3855#

To make android call end button as switch off button USE
*#*#7594#*#*