Hi I'm new here and I just got a nexus 4 off my friend. So I cut the sim and put it in but the data works but the text messaging and phone doesn't work it says mobile service unavailable. Hopefully I didn't put this in a wrong section please forgive if I did. So I'm wondering why my data works and nothing else does I tried the #4646 or something like that but it didn't work no matter what setting i used.