Google this:
Crash an iphone with text message.
I bought the iPhone 6 on BestBuy with bestshop-usa.com, it came in perfect condition, but I recently received a message from an unknown number with obscure symbols and it crashes, and I can't go to my messages anymore. Is it possible that they sent me a defective product?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic