I had a Galaxy Note 2 which was stolen, so through insurance bought a new one off amazon. When I received my new one, and entered my sim and turned it on, everything worked fine until, after about 10 minutes it suddenly stopped connecting to the network (T-Mobile UK) and when I swipe down the system tray it said 'Emergency calls only'. I sent it back, recieved a new one this morning for the same thing to happen. To me this can't be a coincidence. I don't feel like my sim is the problem since it works fine on my Samsung Galaxy Ace 2 that I've been using it. Would really appreciate if anyone can come up with a solution as I'm so frustrated with having to send it back and wait for a refund to order a new one that likely will have the same issue. I know I should probably just go for a different phone, but I've found the Galaxy Note 2 to be the best phone I've had (when it works) Thanks in advance!