The iPhone calculator is great for crunching numbers in a pinch, but you can also use it to have some fun with your friends and family. Here are some cool calculator tricks you can use to find someone's phone number, guess their age and astound them with your math wizardry.
Can I Get Your Phone Number, please?
This trick works only in the US with 7-digit phone numbers. Make sure you hit enter/equal between each step.
Open your iPhone calculator
Type in the first 3 digits of your phone number (not your area code) (So you would type in 759 if your number was 603-759-1234)
Multiply that number by 80 (759 x 80 = 60,720)
Add 1 (60,
