Got my sim swapped out tonight, we'll see if that does anything for me. I can say straight away it does nothing for 4g reception in my house, but i figured that's a given anyway.
I went crazy yesterday because I was unable to get on the data network. I switched out ROM a and cycled data and airplane mode over and over with no luck.
This morning my data is back!?!"
UPDATE: After using the phone on WiFi for about half an hour I lost my data again. I will update again once I get into another location.
2nd Update: I left the house and my data returned inn the car. I returned home this afternoon and the data disappeared.
Went to a hockey game in a 4G area and also had free wifi art the rink. During the game I had no trouble switching between the three.
I am now back at home and my 3G is fine. I have no idea what it's going on. Hopefully I won't need to mess with this again (any time soon).