remove the battery and look at the sticker under it ,the number he needs is an 11 or 18 digit number usually labled esn or meid. i cant remember on the cosmos but if there is only a hex number (letters and numbers) it will have to be converted to decimal. if this is the case just about anyone here can do it for you.if you need help with this please remember to not post your phones numbers in the open forum only thru private messages.I or someone else will conver it for you,just ask if you need help.
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