I got a Pantech Matrix through AT&T. The phone locked to AT&T, I’m trying to use it with boost mobile it gets signal but not working, a few people told me that it couldn’t be used with boost but one of my friends has one and his works fine with boost, I just cannot figure out what settings need to be changed for it to work, I can even use my sim card in his phone and it works fine, any help would be great full.