My HTC Thunderbolt has randomly shut down for at least three years. I've replace it probably five times, but it continues. Sometimes it is fine for a few weeks. I have no outside apps installed. The other day, the phone rang and when I looked at it, it shut down. Shuts down in my pocket, while charging, while just sitting on the desk, just whenever it feels like it. Randomly.

Then it says that the Sim card is activating, that I have to wait two minutes. Of course, it is not activating, nothing happens...

What a piece of crap.