If you are using SMS to authenticate your Twitter you will need to switch to another authentication method before 20 March 2023 as Twitter is going to turn the service to save itself $60m.
Twitter gets rid of SMS 2FA for non-Blue members — What you need to do (bleepingcomputer.com)
Now this is not a bad thing as SMS authentication is inherently insecure and vulnerable to a variety of attacks. So it is good practice to replace it with either a hardware authentication device or use an authenticator app – not only for Twitter but for any other service you still use SMS authentication for.
If you want to continue using SMS authentication – and I cannot explain why you would , but I am sure there is a use case somewhere – then you can pay and become a Twitter Blue subscriber.
Clive Catton MSc (Cyber Security) – by-line and other articles
Further Reading
Tears, blunders and chaos: inside Elon Musk’s Twitter | The Guardian
Something you know, something you have or something you are.
