I have an iPhone 4 and recently updated to ios 7. The trouble is that when I did I lost the 3G function. I have tried doing a network restore but this only brought 3G back for a short period. Can anyone help?
You posted in the iPad forum instead of the iPhone forum. To get answers to your question, next time post in the proper forum. See https://discussions.apple.com/index.jspa I'll request that Apple relocate your post.