The only time I've used Asurion was when I cracked my S4 screen and the display would not light up. They sent me a brand new in box phone as well. I broke my old iPhone 4S and replaced the screen myself but at the time, the screen and digitizer for the Galaxy S4 was almost $200.00 so I figured I'd just file a claim and get a new one.
The iPhone 4S was a total pain to replace but I got it done. I've replaced several iPhone screens. 4S three times, iPhone 6 Plus twice, iPhone 4, iPhone 5S, iPhone LE, iPhone 5C. Helped a lot of friends out. Lol. It got so much easier on the iPhone 5 and up models. I'm sure a 7 is easy too but might not be waterproof after, unless you can get some glue or gasket, whatever they use.