Hi @marian_magdy,
What devices do you see? Is it only watches? Make sure you restart Katalon Studio after running those xcode commands.
You can try to run this from the command line to see if your system actually sees a list of phone simulators:
xcrun simctl list
If that shows you the device you expect, but you can’t see it in Katalon, you can try some of these troubleshooting tips:
Hope this helps,
Chris