Unlocked 3Gs T-mobile Sim Card No Service?

I Have an Iphone 3Gs Unlocked with RedSnow and When I Put My T-mobile Sim Card in it, It Says "No Service" I Don't Get It Because it figured it would say un valid Sim or something. When i Plug it into Itunes I Get a Message saying that it"s and invalid sim card. So Help.

Sounds like the phone is NOT unlocked, even though you tried to unlock it… Or the phone was reported lost/stolen and blacklisted.

Is your sim card active?

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