AppForShareShare a build

UDID finder

Find your iPhone or iPad UDID

Developers need your UDID to add your device to a test build. This takes about 20 seconds in Safari.

Open this page on your iPhone or iPad

Scan the code with the camera, or send yourself the link: https://appforshare.io/udid

Questions

What is a UDID?
The Unique Device Identifier is a 40 character code (25 on newer devices) that Apple assigns to every iPhone, iPad and iPod touch. Developers add it to their provisioning profile so a test build can be installed on that device.
Is this safe?
The profile asks iOS for the UDID, model, iOS version, device name, serial number, IMEI, ICCID and Wi-Fi address (iOS leaves out any the device does not have). Nothing stays installed on your device, and the result page is only kept for one day.
Why does iOS ask me to go to Settings?
Apple only lets profiles be reviewed in Settings. Open Settings, tap Profile Downloaded near the top, then Install. Safari opens your result right after.
Can I send the UDID to my developer?
Yes. The result page has a copy button, and with a free account you can keep every device in one list and export it for the Apple Developer portal.