virgin mobile and +32 country code being added to uk mobile numbers

Unlike some Android devices, contacts are neither stored locally on an iPhone nor in SIM. They are synced to an email account that you had Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other

If Contacts on iCloud, try this --> Restore contacts, calendars, bookmarks, and more using ...

You can change the country format for addresses and phone numbers using https://www.icloud.com

Note: These changes apply only to Contacts on iCloud.com. You must change formatting individually on each of your devices using the Contacts app on iOS and Mac, or Microsoft Outlook on Windows computers. For more information, see the documentation for the apps.

1. Click the Action pop-up menu  in the sidebar, then choose Preferences.
2. Choose a country from the Address Layout menu.
3. To have Contacts automatically add hyphens and other symbols in phone numbers, select “Automatically format phone numbers.” If you want to be able to enter phone numbers in more than one format, don’t select this option.
4. Click Save.

Watch this GIF Below