Problem

Contacts are not receiving SMS notifications from Everbridge after switching phone providers.

Root Cause

It can sometimes take several days or even weeks to complete the porting process when moving a phone number from one carrier or service provider to another.

Solution

Have the contact reach out to the new service provider and request for an update on the porting process.

For more information: These are the Local Number Portability (LNP) steps according to the National Portability Administration Center (NPAC):

For additional information, see this blog post from a service provider: http://blog.flowroute.com/2014/04/16/why-is-your-number-port-taking-so-long/