At one point or another, you will need to know how to find a serial number on a phone. 📱 Whether you are getting your iPhone serviced at the Genius Bar or looking up information on your Android smartphone, knowing your serial number will save you a lot of headaches down the line when you inevitably get asked for this information. Here are three methods each for checking your iPhone serial number and your Android serial number, including Samsung smartphones, that are sure to save you a lot of ti