Apple id verification
Changed cell phone number logged out of apple id and now i cant get back in because it wants to send the verification to my old cell number account recovery states 2-3 days seriously!?!
iPhone XS
The Recovery Process is an automated process and length of time it takes can vary a lot. Apple ID Support can only answer your questions. They can't intervene in or speed up the process. The article below has some suggestions to shorten the the time the process takes.
Apple ID - Recover your Apple ID with two-factor authentication account recovery