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The Verge
If you like to crank up your music, you may hurt your ears.

According to the CDC, repeated exposure to loud sounds — say, listening to your favorite music at ear-splitting levels via your earphones — can permanently damage your hearing. Luckily, some phones — specifically, iPhones and Samsung Galaxy phones — have apps that can set a decibel limit and, as a result, prevent harm. Here’s how to find them.