3gs 6.0.1, Factory Unlocked, base band 05.16.07 No Service??

[MDCR661]

I have a 3gs running on 6.0.1, Factory Unlocked, base band 05.16.07. When I put any sim card in it it says No Service?? It's not jail broken. Please help. Thanks!

 

[MDCR661]

It's actually on 6.0

 

[willerz2]

Make sure the APN settings match the carrier's setting that you're trying to use.