It depends on how you want to use the phone. CUCM UWL licenses are not phone specific but rather user specific and you get different types of entitlements based on different license type. What is it that you want to do with the user getting this phone, i.e. do you need voicemail, softphone, mobile app for smartphone, etc?
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.