What is a Phone?
A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user moves within a telephone service area, as opposed to a fixed-location phone.
How To Activate a Phone that was Reported Stolen
Report your missing phone to your network provider
You should tell your network provider straight away if your phone is lost or stolen, so they can block it and stop anyone else from using it. If you don’t tell them straight away you might have to pay for any unauthorised phone calls, which can be very expensive.
If your phone’s been stolen, ask your network provider for the phone’s identification number (IMEI) – you’ll need to give this to the police.
If you find your phone your network provider will normally be able to reactivate it.
Can someone still use a stolen phone?
A thief may sell your stolen phone to someone else, or they may use it themselves. This can be particularly problematic if you store sensitive information on your phone, as it can put that information at risk of being accessed by someone else.
Can a stolen phone be tracked after a factory reset?
Whether your device is rooted or not has nothing to do it. The only requirement is having Google “Find My Phone” setup and active on the Google account signed into the device and the device being powered on so to be able to locate it, even if a factory reset is performed GRP should have your back.