What is my UDID?

The term UDID stands for Unique Device IDentifier. It is used by Apple to recognize your device. To be able to install builds made by Buildozer on your iPhone or iPad the UDID of that specific device must have been known.

You need to provide the UDID to your developer who will have to register it with Apple, include it in the provisioning profile, update the provisioning profile with Buildozer and create a new build.

An UDID typically looks like this for newer devices: 

00008010-0012345678A0802E

The older format looked like this:

012abcd3ab1234c5d67e89012345678ab12c3de4

There are a number of ways to obtain the UDID and over time the way to obtain the UDID has changed.

Using a Mac running macOS Catalina (10.15) or newer

To obtain your UDID on a Mac running macOS Catalina (10.15) or newer take the following steps:

  1. Connect your device using an USB cable to your Mac
  2. When prompted if you trust the computer, choose to trust it and follow the prompt to enter your security code
  3. In the Finder, open a new window and select your device which is listed under "Locations" in the sidebar
  4. At the top of the window you see your device name and below it a line with some extra information
  5. Click on the line with information until you see the UDID
  6. From the contextual menu (control-click) for the line with information choose "Copy"
  7. Paste the UDID into a message to the developer and don't forget to include your name, e-mail and device model (for easier future reference)

Using a Mac running macOS Mojave (10.14) or earlier with iTunes installed

To obtain your UDID on a Mac running macOS Mojave (10.14) or earlier take the following steps:

  1. Connect your device using an USB cable to your Mac
  2. When prompted if you trust the computer, choose to trust it and follow the prompt to enter your security code
  3. Open iTunes
  4. Click on the phone icon
  5. You will see your Serial Number displayed
  6. Click on the Serial Number until it displays UDID
  7. From the Edit menu choose "Copy" (command-C)
  8. Paste the UDID into a message to the developer and don't forget to include your name, e-mail and device model (for easier future reference)

Using a Mac without iTunes installed

To obtain your UDID on a Mac without iTunes installed take the following steps:

  1. Connect your device using an USB cable to your Mac
  2. When prompted if you trust the computer, choose to trust it and follow the prompt to enter your security code
  3. Open System Information from the Apple menu by holding the option key down
  4. Select Hardware > USB in the left pane
  5. Find your device in the USB Device Tree and select it
  6. You will see a Serial Number displayed but, confusingly, this value is actually the UDID and not the Serial Number
  7. Copy the value behind Serial Number
  8. If it is a newer device add the hyphen after the 8th digit (see sample format above)
  9. Paste the UDID into a message to the developer and don't forget to include your name, e-mail and device model (for easier future reference)

Using a Windows PC with iTunes installed

To obtain your UDID on a PC with iTunes installed take the following steps:

  1. Connect your device using an USB cable to your PC
  2. When prompted if you trust the computer, choose to trust it and follow the prompt to enter your security code
  3. Open iTunes
  4. Click on the phone icon
  5. You will see your Serial Number displayed
  6. Click on the Serial Number until it displays UDID
  7. From the Edit menu choose "Copy" (control-C)
  8. Paste the UDID into a message to the developer and don't forget to include your name, e-mail and device model (for easier future reference)

Using a Windows PC without iTunes installed

To obtain your UDID on a PC without iTunes installed take the following steps:

  1. Connect your device using an USB cable to your PC
  2. When prompted if you trust the computer, choose to trust it and follow the prompt to enter your security code
  3. Open Device Manager from the Control Panel
  4. Under Portable Devices find your device and open it
  5. Select the Details tab
  6. Select the "Device instance path" property 
  7. Copy the value for that property and take the bit after the last forward slash
  8. Paste the UDID into a message to the developer and don't forget to include your name, e-mail and device model (for easier future reference)

Without a Mac or PC

There exists third party solutions which can read your UDID by installing profiles on your device. For security reasons we advice against using such solutions.

 

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