Greetings from Binance Customer Support Team. Your concern has been well received. To solve your problem in case your phone was lost, please make sure you have saved your 16-digit backup key for your 2FA Google Authenticator. If in case you lost it, you may reach out to Binance Customer Support Team via support ticket: https://support.binance.com/hc/en-us/requests/new. Meanwhile, it is higly recommended for all users to complete level 2 verification for safety concerns.