Knowing an iOS device’s serial number is useful for a wide variety of reasons, from checking warranty status, determining if it’s eligible for a free repair from Apple, checking unlock status, checking for iCloud Activation Lock, insurance purposes, repairs, registering a phone for a variety of services, amongst other reasons.
Have you ever needed to know that dratted thing? Paul Horowitz to the rescue! His post on OS X Daily yesterday (which starts above), How to Find the Serial Number of an iPhone, iPad, or iPod Touch, gives you not one, but two ways to get the job done.
Do it. Before you need it. You never know…