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Each legitimate SIM slot in mobile phone has unique International Mobile Equipment Identity or IMEI number, e.g. if someone has two SIMs, then phone comes with two IMEI numbers.

At the time of registration of SIM (on every new device/ reboot/ restart) phone sends IMEI number to service providers so that service providers (SP) can match the IMEI & SIM. SPs save associated number data in their databases. Some SPs keep record of every IMEI associated with the mobile number.

But, that doesn’t mean one can hack your mobile number merely by knowing IMEI number.

IMEI number is useful when someone’s phone get stolen, or lost & found. SPs are having such data.

activity_main.xml

MainActivity.Java

Here also adding runtime permissions.

 

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