AT&T,Sprint and Verizon cellphone customers, check your upgrade eligibility and receive a free

UPDATE:  I just received my coupon (3 days after I submitted my number) via email.  It's basically a $5 gift card, rather than a coupon, good for anything in Radio Shack both in-store and online, and it expires 7/18/12, so I'm guessing these are good for one month out from the time you submit your number.  I'll probably pick up some free batteries.

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If you have a pre-existing cellphone contract with AT&T, Sprint or Verizon, enter your mobile number here to see if you are eligible for an upgrade.  Just for checking, you'll receive a $5 Radio Shack coupon via email (and you'll also be entered into a contest to win a trip to Paris).

I just checked my number and haven't received my $5 Radio Shack coupon yet, so I'm not sure if this will be a straight gift card or a discount off a minimum purchase.  I'll update this post when I receive it.