Do not wait. Log into your Gmail (using a trusted device that doesn’t require a code) and change your password to a strong, unique one (16+ characters, using a password manager).
Time-based One-Time Password (TOTP) apps generate the 6 digit code locally on your device using a secret key. No SMS is sent over the network. Even if a hacker has your phone number, they cannot get your code. 6 digit verification code gmail
How to switch:
A 6-digit verification code in Gmail is a security feature used to verify the identity of users when they try to sign in to their Gmail accounts from an unfamiliar device or location. This code is sent to the user's phone via SMS or voice call, and it must be entered within a limited time frame to complete the sign-in process. Do not wait
Go to your Google Account → Security → “Manage all devices.” Sign out any devices you don’t recognize. Hashing & storage:
The length is not arbitrary. Security experts have determined that a 6-digit numerical code offers the optimal balance between:
When you see the prompt "Enter the 6-digit verification code generated by your application" or "We sent a 6-digit code to your recovery phone", Google is verifying that you are the legitimate owner of the account—not a hacker who merely stole your password.