How to check device id of iPhone simulator?

I want to check device id for my iPhone simulator application. But not using codebase. I know the way how to do with codebase, using UIDevice instance.

Is there any way to find device id without using codebase?

EDIT: See other answers for the newer ways to view UDIDs for CoreSimulator-based simulators.

1. instruments -s devices
2. xcrun simctl list
3. From Xcode: Window -> Devices and Simulators -> Simulators. The Identifier value is the UDID.

From 2011:

https://stackoverflow.com/questions/1520189/is-the-iphone-simulator-udid-unique-for-each-installed-instance/3429025#3429025

This answer should be what you want. Look at System Profiler on your mac and the id is there. I just tested on my machine and the IDs match.

This is the exact Terminal command you can enter to view it:

system_profiler SPHardwareDataType

Try this

instruments -s devices

As so often, there is a Xcode terminal tool for that (part of the Xcode tools) see xcrun manpage

xcrun simctl list | egrep '(Booted)'

lists only all booted (could be more than one) Simulators (remove | egrep '(Booted)' to see them all).

UIID results like

 iPhone 6 Plus (AAAABD40-9DE6-44B7-A4EA-B34ABCDEFCA6) (Booted)

you can then lookup a folder in ~/Library/Developer/CoreSimulator/Deviceson your Mac and find all the "belongings" of that particular Simulator

You can also retrieve the same UDID, labeled as "Identifier". In the Xcode Window menu, select Devices and Simulators: then select the Simulators tab:

You can search for just the booted devices and get the iOS version (different from @TiBooX's answer which just shows the active devices). You also don't need to use grep, you can just use the built in functionality of xcrun:

$ xcrun simctl list 'devices' 'booted'

Which will print out something like:

== Devices ==
-- iOS 10.3 --
-- iOS 11.4 --
-- iOS 12.4 --
-- iOS 13.4 --
    iPhone 11 Pro (A5DEEA78-1E82-472E-B7CC-FFD27741CDA2) (Booted)
-- tvOS 13.4 --
-- watchOS 6.2 --

I would recommend adding the following alias to your .bashrc or .zshrc:

# Get the active simulator with
alias active-sims="xcrun simctl list 'devices' 'booted'"

This way you can just run active-sims without remembering the entire line every time.

Xcode -> Window -> Devices and Simulators -> Select Device for which you want identifier (Inside details you can see identifier)

You can visually review the value in the simulator by navigating to home/Settings/General/About/Serial Number which is the same as your desktop machine. You can verify this by navigating to Apple/About This Mac and clicking the OS version number under OS X (the display will change to indicate your UDID - you may need to click it twice).

There is another way without using command line, inside this plist file ~/Library/Developer/CoreSimulator/Devices/device_set.plist, it lists down all the devices with UUID.