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The IMEI is likely tied to your account, which has nothing to do with the SIM card. Either way, you don't want to be giving out parts of your SS though.

that is exactly what it is, the IMEI.

however, you should give him your SSN#..

i'd also give him your mother's maiden name, your 1st car, and your pet's name.
 
Should have gotten lifelock.

lifelock.png
 
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