Don t start throwing your iPhone around. But if your screen is smashed, don t worry. Apple is relaxing its rules about accepting iPhones in less than perfect condition as part of its trade-in program.
iPhones break. The screen might smash when it slips from your hand; you might drop it in the toilet (if so, take a look at How to fix a wet iPhone); or the battery might just start draining more ...
So last night I dropped by back macbook while it was open. The bottom right corner of the screen broke, and the cracks traveled all the way up the screen. Needless to say, the screen no longer works .