• The major flaw in this system, according to the experts, is that a phone's International Mobile Equipment Identity (IMEI) - a unique number assigned to each device – may be easily changed with for a small fee. While repairing a broken or malfunctioning phone, the IMEI might also be changed.
• Unless we get it serviced from an authorised centre, if you alter the PCBA (printed circuit board assembly) of a device, the IMEI will change automatically.
• When a user makes a call, a record of the phone number and the IMEI of the handset used to make the call is established, which aids in device tracking. While a different SIM card can be used to replace a phone number, only a technical person with particular equipment can alter the IMEI.

Read More: My phone is lost how will I find the person who has stolen it?