I have an iPhone 4s. I replaced the screen on it with a new screen due to cracking?

I have an iPhone 4s. I replaced the screen on it with a new screen due to cracking

Well, after replacing it, it was searching for service, and then would say "No Service". I went through a few things, such as resetting the phone and resetting the network.
The only place I can get any service with it now is outside of my home, and even then it will tell me that my data service is not activated (which I'm assuming is my service provider).

Would restoring my iPhone via iTunes work or is there another way I should be going about fixing the problem? Thanks!
Update 2: OH, and I also have virgin mobile as my wireless provider. I'm not sure if that makes any difference or not though.

It would appear that when you got your screen replaced, the person managed to damage your antenna so resetting/restoring stuff will do nothing.
If you got it replaced by Apple, you could send them a complaint and send it back for a replacement.
If you got it replaced it by a third party i guess you could do the same but i doubt theyll give you a replacement but it doesn't hurt (maybe) to try