Test with real networks
Simulators show that your code works, but not that messages actually arrive. A rented number in the target country receives your SMS over the same networks your users have.
Pick countries
Rent numbers in the countries you launch in. Sender names, message length and delivery time can differ by country.
Automate it
Rent with the API, trigger your app's SMS, then read the message with GET /rentals/{id} or a webhook and check the code your app sent.
Keep numbers for regression tests
A 30 day rental gives you the same numbers for repeated test runs, so you can sign the same test accounts in again.