Mac Finder
- Connect your iPhone or iPad
- Open Finder and select the device
- Click the serial number to show UDID
- Copy the UDID
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Find and Check iPhone / iPad UDID
Use Finder on macOS or Apple Devices/iTunes on Windows to copy your Apple device UDID. The format check runs in your browser.
Three Ways to Find a UDID
Choose the method that matches your computer.
Windows Apple Devices / iTunes
- Open Apple Devices; use iTunes on older Windows
- Connect and select your device
- Click Serial Number in General or Summary
- Copy the UDID
Prepare the Device
- Unlock your device
- Trust the computer when prompted
- Enter the device passcode
- Return to Finder or iTunes
About Apple Device UDID
What is UDID?
UDID is a unique device identifier used when adding test devices to an Apple developer account.
Can a page read it directly?
Regular web pages cannot read UDID directly. You need to copy it from Finder, iTunes or a trusted profile flow.
Will it change?
System updates usually do not change UDID. Avoid sharing it publicly.