Why do iPhone screen crack so easily?

I use to have the iPhone 4S now I have SG4. When I have the iPhone the screen is easily cracked especially when screen facing down. But when my SG4 dropped on the ground facing down it is not cracked, not a tiny bit. So what makes the iPhone screen so easily cracked?

Because they are made by Mexicans who are lazy and… Well that's it

Think that is bad?
See this.

the iPhone is DUST while the Galaxy is just jumping about.

Your English sucks. The iPhone screens crack easily because they are made of glass unlike most phone developers who use so-called Gorilla Glass. The glass iPhone uses costs more, but can take less beating. Your English sucks.

Cheap glass its a s version for a reason and its cut backs are shown its also due to the glass is strained

Yep. I phones are made of real glass, while other phones normally have Gorilla "Glass", which makes it tougher to break

Mine iphone screen has never broke once. Here's an idea, stop dropping it on cement over and over and maybe it won't break.

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