That's awesome! It shouldn't have any issues with multi-sim card phones. The phone number verification would work as if you have multiple Google accounts when

That's awesome! It shouldn't have any issues with multi-sim card phones. The phone number verification would work as if you have multiple Google accounts when trying to sign-in with Google. If you have 2 phone numbers, and have verified those numbers in any app that uses Cotter, then we can check that both numbers are verified on that device. We don't link the phone numbers. It's up to the website/app if they would allow multiple phone numbers for the same account (like Github, you can have multiple email addresses).