Feature request: ability to ignore CNContactsUserDefaults data

[xaphod]

New Issue Checklist

• Updated PhoneNumberKit to the latest version
• Phone number formatted correctly on JavaScript version
• I searched for existing GitHub issues
• I am aware that this library is not responsible of adding/removing/changing phone number formats and any request should be done at libphonenumber repo

Steps to reproduce

Customer in USA, has eSIM installed, show PhoneNumberTextfield

Expected result

Customer expects to see USA flag when PhoneNumberTextfield is created

Actual result

Customer sees French flag

Environment

Cocoapods

I think this issue is because PhoneNumberUtility's let countryCode = CNContactsUserDefaults.shared().countryCode.uppercased() is getting FR from the eSIM.
That might be correct for some use-cases, but for ours we want always the country/flag to be taken from the Settings App -> General -> Region. That would mean NOT looking at CNContactsUserDefaults ie skipping that check.

For example there could be a static property on the PhoneNumberUtility class that we could set prior to anything else, so that the Contacts framework is not used.

I'd be happy to make a PR for this, if this is a thing you'd allow to get merged.

[bguidolim]

Hey @xaphod

This sounds more like an edge-case than a regular case for me, however, feel free to raise a PR for this maintaining the current behavior as default.

[xaphod]

Thanks @bguidolim - see PR 882 - #882
The big reason we want this is that is makes the behavior entirely controllable by the user, ie. they set Region and it always uses that. Without this the unpredictability of eSIMs changing the country code is bad for us.
Thanks.

[xaphod]

Thanks for merging the PR 👍