My sister, her husband and I all have iPhones that we bought a few weeks ago. As we flew into Germany they both recieved texts saying, "welcome to Germany!"... mine did not. They can make calls, accept calls, and they are connected to certain services now that we are in Austria (like "one")... Everytime I try to connect to a CARRIER it says "network lost- you no longer can access this carrier" or whatever that message is. What happened? We're all on the same plan but I can't make or recieve calls Thank you so much in advance if you can help!