You might have missed it, but the virtual keypad you use to enter phone numbers in your smartphone's dialer and contacts app isn't all numbers. Take a closer look, and you'll notice a few mysterious buttons you've likely been tuning out unconsciously. But it's time to stop ignoring them because each has a particular purpose that could come in handy one day. Whether you have an iPhone or Android phone, these mysterious buttons appear in your phone and contacts app, among other places. However, most of these puzzling keys aren't explained by Apple, Google, Samsung, and other device brands. If... more
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