Phone Number Verification (Uniqueness issue)

There may be a possible issue with phone number verification in wallet.

Using a test account (mfpb8603) I was able to verify my phone number for a second time.

Presumably a single phone number can only be verified the once.

The phone number in question is +353 86 124 2299. This number was originally verified with account michaelfbradley.

Screenshot_2019-12-02_at_12.05.05

cc @markeharding

Moved from UX