i'm in San Diego, and recently purchased a new iPad. when I turn off LTE service, I get full bars in most parts of San Diego where I frequent (Mira Mesa, UTC, La Jolla, Hillcrest, Sorrento Valley). However, when I turn on LTE, i instantly drop to about 1 or 2 bars. The most I've seen is 3 bars, and this was very briefly. I understand that LTE coverage might not be the same as 3G, but the difference is troubling. Even with 1 or 2 bars, my speeds are great, but my concern is that there is no LTE coverage (0 bars) in places where I get 3-4 bars of 3G service. One possibility is that this drop in reception might be caused by the fact that I put on a screen protector on the back, but I don't think that should affect reception that much. Is this normal?