Q: natwork problem on my iphone 4s

kolea42,

Thanks for using the Apple Support Communities. I understand that your iPhone reads the SIM card, but you’re not seeing any bars of service.

I know how important it is to be able to get service on your phone. I’ll be more than happy to help. 

Check out this resource, it should help you with your issue. If you can't connect to a cellular network or cellular data - Apple Support

Take care!