Okay, here is the issue. I have been using AT&T LTE in a few areas for a few months now, and my iPhone 5 now seems to be having problems connecting. Sometimes it connects where it used to, other times it doesn't. Interestingly enough, if I go into settings and turn LTE off and back on, it connects to LTE (but it might move back to HSPA+ later). All in all, it is a very confusing situation, but to summarize, LTE does not seem to be working as well as it used to. Any suggestion?