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Smartphones are a relatively new invention, but it’s hard to imagine life without them. They are amazingly useful, and even a literal lifesaver sometimes. Whether you have an Android or iPhone, there are some cool features you can use that may not know about.

From checking your pulse to leveling a painting on the wall, to using augmented reality to help navigate in your car, smartphones almost seem to possess magical powers. Are you ready to unlock what your smartphone can do?

Check out these 75 clever, surprising, and incredibly practical smartphone features you probably didn’t know existed.