Do you want to register a second Twitter account, but it requires an SMS verification? Do you not have access to a phone or prefer not to use your personal number?
Temp SMS Blog
It is possible to use Signal without revealing your phone number and to use Signal on an iPhone or Android phone without an active SIM Card by using the methods mentioned below.
Because most modern services require user registration via phone number, it is impossible to obtain several accounts from the same phone number rather than temp number.