IPhone Gevey 4S CDMA Sprint Suddenly stopped working on my Phone

[umoms]

I bought 3 iPhone 4S CDMA Geveys. One for a Sprint, and the other were for ATT iphones. They ATT ones work fine for use on T-mobile. The Sprint one was working fine for 3 months and then i lost signal and now I cant get it to work again. I tried to reboot, reseat the gevey and nothing. I later found out i got a fake gevey and it does not require a reset sim nor do you need furiousmod activation.

I tried the same gevey in another ATT iphone 4S and it works fine. I tried my T-mobile sim in another ATT iPhone 4S with the same CDMA Gevey and it works fine also.

I chose Sprint 15 as my carrier and it says Waiting For Activation This May take some time.

then it says

iPhone is not Activated
Contact your carrier if this problem continues to occur.

Any ideas what to do to get my Sprint iPhone 4S to work with the CDMA Gevey again?
It was working fine for 3 months...And i tried other CDMA Geveys on this phone and they don't work either.1

[umoms]

still havent fixed it...Any ideas?