Originally Posted by
itamex
from what i understand the 2fa will send the sms or mail code when you login on a new device
so if you logout and login in the app you use daily, nothing changes, it should be a "recognized" device, so no additional security needed
Last month I did my annual dual iPhone upgrade from a 15 pro -> 16 pro and 15 pro max -> 16 pro max with the data transferred over WiFi. Both iPhones had a a new MAC address and Delta did not prompt me for a 2FA with these 2 new devices.