If you have an iPhone 5s, there is a good chance that you lost or damaged the serial number. Serial numbers are important because they allow Apple to track how many units of the phone have been sold. If you need to find your serial number, here are some tips. First, try looking on the back of your phone. The serial number should be printed in small type near the bottom of the phone. If that doesn’t work, you can try contacting Apple customer service. They may be able to help you find your serial number if it’s still registered on their system. ..
