Ever since yesterday, my iPhone 4S has been doing this annoying thing where the data services will simply stop working. The bars or '4G' symbol don't disappear; they look the same as if I had full working coverage. However, anything involving data doesn't work. Spotify doesn't stream, Twitter doesn't refresh, pages in Safari don't load, etc. I don't know if calling and texting still work as most of the people I text use iMessage anyone, and I rarely call, but I know for sure that the data stops working. However, soft resetting the phone solves the issue... temporarily. I've had to do it twice today and once yesterday. I've had issues before where it won't turn off, it will immediately turn back on, and also where it will completely crash when I'm using a simple app like Twitter (freezes, screen freaks out, then takes me back to the lock screen). Could there be something wrong internally? I have dropped it a few times, but those caused damage of nothing more than a few light scratches. It's on the latest firmware (5.1.1), if that matters.