Our third party telephony provider is reporting delivery issues for SMS that may impacting delivery to Verizon Wireless USA.
A few alternatives when SMS is down.
Phone Call One-step
User experience: https://www.logintc.com/authentication-solutions/phone-call/
Documentation: https://www.logintc.com/docs/guides/phones/#phone-call-one-step-authentication
The user receives a call and simply presses any button to approve. Kind of like a push notification via a phone call.
Phone Call One-Time Passcode
User experience: https://www.logintc.com/authentication-solutions/phone-call-otp/
Documentation: https://www.logintc.com/docs/guides/phones/#phone-call-otp-authentication
The user receives a call and is told a One-Time Passcode they can enter. So an alternative to SMS delivery of OTPs.
These methods can be enabled in the relevant Police under Authentication Methods:
https://www.logintc.com/docs/guides/policies/#authentication-methods