A2P 10DLC Campaign Vetting Delays: Twilio cannot approve 10DLC Campaigns ourselves, and must rely on third parties who control our connections to carriers to sign off. These external processes are creating several week delays for our customers. We continue to escalate these issues and are working to reduce delays wherever possible. Further details will be shared in the Campaign Vetting Changes article as they become available.
No, once you port away your number, Twilio no longer has control over the phone number. It will be up to your new carrier to provide voice and/or SMS services.
That said, Twilio may still be able to provide messaging services via Hosted SMS for some phone numbers, even after they have been ported away. For full details, including how to request this service, see our Hosted Numbers FAQ (twilio.com/docs).