Hi there,
Thanks for reaching out.
For any and all info regarding SMS verification and assistance with the process, please consult our [url=https://help.bungie.net/hc/en-us/articles/360054873751-SMS-Validation]SMS Validation[/url] guide.
Alternatively, if you're seeing 1618 errors, please know we've received reports of these errors affecting SMS verification and can confirm the team is looking into the situation.