New-Phone 2FA Migration Checklist
The classic way to get burned switching phones: the new one arrives, you wipe the old one, and only then realise your Binance codes never came across in the authenticator — and now you’re locked out. Work through the two checklists below, and don’t rush to wipe the old phone; wait until the new one is fully working.
① Before the switch (while you still have the old phone)
② After the switch (on the new phone)
The one thing that matters mostWhatever else you do, first dig out your Binance backup recovery codes and store them offline. As long as you have them, you can get your 2FA back even if you lose both the old and new phones. For handling a lost phone with no recovery codes, see the article below.