I recently upgraded from the iPhone 4S to the 5s and now have LTE speeds - which are great. Today I noticed my speeds seemingly very very slow. I got online and noticed my data usage is at 5224 MB. I guess 5GB is the limit before AT&T starts to throttle your speeds. This sucks. I guess there is nothing to be done other than wait for my new billing cycle to start - which thankfully is in a couple days. I love the unlimited plan, but I wish it was truly unlimited. Dang! I guess I need to turn off iTunes Match and wait to update apps when on wifi instead.