So I was having tons of network issues, so knowing it was probably an AT&T thing I went to a store and had my sim replaced. The problems didn't really change much. If I call Apple (busy schedule so its easier than Genius Bar) to have my phone replaced, will they know I already tried a new sim? A friend of mine had network problems and instead of replacing the phone they sent him to AT&T. Will they know I changed sims or just trust me that I did it?