I used Kde Plasma for years. I use the english language fo the OS but change localization to danish. The representation of the danish phone numbers are wrong. There are no area-codes but a 8-figure number both for landline and mobile phones like this: aa bb cc dd. The Kingdom of Denmark has 3 country-codes as Greenland and the Faroe-islands has their own country-codes: Denmark +45 Greenland +299 own numbering system Faroe islands +298 own numbering system SUMMARY STEPS TO REPRODUCE 1. regional settings 2. select country 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: kde linux alpha latest KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION it was like this for years in earlier versions suggestion: make a choice for changing selected values with one click.
The Region & Language setting config the Locale not country. The "Danmark" means "Danmark" locale (da_DK.UTF-8). You can search Greenland and Faroe Islands, they have their own entries.
https://sourceware.org/git/?p=glibc.git;a=blob;f=localedata/locales/da_DK;hb=5176a830e70140cb3390c62b7d41f75dbbf33c7c#l251 You'll need to file a bug report with glibc. The locale definition lists an area code placeholder.