The UDID, an abbreviation for Unique Device Identifier, is a feature provided by Apple to identify iOS devices. It is very important to know the UDID of your iPhone. UDID is basically a 40-character alphanumeric string – especially on iPhone X models or prior or a 24-character identifier with a dash after the 8th digits … Continue reading How to Find Your UDID in the New iPhone XR, iPhone XS & XS Max?