Find Your iPhone or iPad UDID
Get your device UDID for Apple Developer Ad Hoc testing. Open this page in Safari, install the temporary profile, then copy your UDID.
Get My UDIDThis temporary profile requests only UDID, iOS version, and product type. It does not request IMEI or ICCID.
After copying your UDID, remove the profile in Settings → General → VPN & Device Management.