I was having problems with my Razr Maxx on Thanksgiving so I updated the PRL. Then when I went to certain areas my phone began to roam. They sent me a replacement phone beacuse I had a lot of issues with the other one. I was sent a Galaxy S3. That phone has the same PRL as the Razr and I'm still having roaming issues. My gf's phone has a older PRL then mine and her's doesn't roam at all. What can I do to fix this?