When youre switching phones after an upgrade or an accident, the job of checking up on your two-factor verification apps can get lost in the hustle of transferring photos, contacts, messages, and all the other stuff that more quickly comes to mind. Without your security codes, you might get locked out of your key online accountsheres how to make sure that doesnt happen. If you use SMS codes and change your phone number, make sure the new one is registered with whatever apps or services it needs to be before you lose access to the old one.”]
Source: https://gizmodo.com/how-to-easily-switch-your-two-factor-security-to-a-new-1821808681