iPhone XS doesn't have UDID

Question

I want to add an iPhone XS UDID in the Apple developer portal but I am unable to find the UDID in iTunes and without adding the UDID I am unable to run my app on the iPhone

Answer 1

Use terminal "system_profiler" to find the UDID for attached devices

If you're comfortable using Terminal, you can paste this command in to Terminal or save it as a script or alias.

system_profiler SPUSBDataType -detailLevel mini | \
grep -e iPhone -e Serial | \
sed -En 'N;s/iPhone/&/p'

Paste that text into Terminal and press enter to run system_profiler for the USB devices, and then filter for only the iPhone's UDID from the pretty-long output. Again, be sure to add the necessary hyphen after the first eight digits for iPhone XS and XS Max devices.

output on terminal:

$ system_profiler SPUSBDataType -detailLevel mini | \
grep -e iPhone -e Serial | \
sed -En 'N;s/iPhone/&/p'
Output:
2018-10-25 12:57:06.527 system_profiler[23461:6234239] SPUSBDevice: 
IOCreatePlugInInterfaceForService failed 0xe0003a3e
        iPhone:
          Serial Number: 3aeac....4145

Ignore following failures 2018-10-25 12:57:06.527 system_profiler[23461:65234239] SPUSBDevice: IOCreatePlugInInterfaceForService failed 0xe0003a3e

Look for Serial Number: 3aeac........4145

Alias:

# find UDID
alias fudid="system_profiler SPUSBDataType -detailLevel mini | grep -e iPhone -e Serial | sed -En 'N;s/iPhone/&/p'"

From: https://deciphertools.com/blog/2014_11_19_how_to_find_your_iphone_udid/