So today I put the Next Sim with my own simcard into the iphone and I turned it on. The network was immediately there, and when i tried to call someone I pressed keypad and wanted to type in the number. Here's the problem. I couldnt. Just when I pressed the 1st number, the phone threw me out on the main menu. I don't know why this is, but it might be the Next Sim. Anyone has any ideas?