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Dropping your phone

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Lets face it, everyone drops their phone. Most of the time its fine, but some unlucky few have to face the sickening feeling of picking up their phone and discovering a cracked screen. But why then, are our phones sometimes totally fine, and other times totally destroyed? Well. a lot of factors play into this such as the obvious are you using a case and what did you drop it on, and some less obvious factors like the orientation you drop your phone, the angle that it hits the ground, and what kind of glass your phone screen uses. Some of these variables could be difficult to calculate or measure, however, when it comes down to it the basic concept behind dropping your phone is freed fall. so, in theory when your phone hits the ground, it hits with a force mg which sends a shock wave through the phone, potentially shattering the screen. In conclusion, if you don't want to cut up your fingers every time you go to use your phone, a case can go a long way in absorbing that shock and preventing that dreaded cracking.

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That's interesting, so what if a person without a case drops her/his phone at a certain angle and the screen cracks.  Would the screen crack even if his a case?  If not, how much do cases absorb the energy of the phone falling? If so, how would you make a case, so the screen wouldn't drop?

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