how to trace track locate and search mobile number current location online in india and united states , usa by imei of cell phone. know the technique & procedure how police department track cell phone location by imei number in india & unites states by mobile number in india and abroad using a software called cell phone locator. In united states of america , it is very easy process and some where it can be accessed using cell phone tracker software. This is determined by the triangulation formula used by the measurement of angle of the cell phone in respect to the mobile tower.It can be easily done by gps facility if on in your phone it can be accessed on the internet on google map and google latitude , these phone tracing software are also used in android , apple i phone etc.