Install IPA on iPhone
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Installing apps and profiles only works in Safari. Please reopen this page in Safari:

  1. Tap the ⋯ button (or the share / compass icon) in a corner of the screen.
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See detailed instructions

You are on an Android phone. The install steps must be done on an iPhone. Open this page on your iPhone

Basics

Get your iPhone's UDID without a computer

The UDID identifies your iPhone and is required to buy a personal certificate. How to read it on the device with Safari, and what to watch out for.

Updated 9 October 2026

The UDID is your iPhone’s unique identifier. Sellers of personal certificates need it to register your device. iPhone XS and newer use UDIDs like 00008xxx-xxxxxxxxxxxxxxxx; older models use 40 characters.

The Settings app doesn’t show the UDID. Without a computer, you get it by installing a UDID profile through Safari.

  1. Open the UDID page Safari only

    Open the UDID page your certificate seller sent you, in Safari. Tap the button to get your UDID and choose Allow to download the profile.

    Safari asking to allow a configuration profile download Tap to view full size

  2. Install the profile in Settings

    Open Settings. Near the top you’ll see Profile Downloaded. Tap it, tap Install and enter your passcode.

    Do this within 8 minutes of downloading, or the profile is removed automatically.

    Installing the UDID profile in Settings Tap to view full size

  3. Copy the UDID

    Safari reopens and shows your UDID. Copy it and send it to your certificate seller.

    A web page showing the iPhone's UDID Tap to view full size