Choose an authenticator.
There are many options when it comes to two-factor authentication. The most popular options include apps that can be downloaded to your Android from the Google Play Store, like LastPass Authenticator, and Authy.
Enable 2FA on your Android device
On your Android phone or tablet, open the device's Settings app, navigate to your Google Account. At the top, go to Security and under "Signing into Google" tap 2-step verfication. Tap Get Started and follow the setps on the screen and select your chosen authenticator app.
Log in with extra protection.
After you hit "Continue," the next time you log in to the account, you will be asked to confirm your password and two-factor authentication, too. Enter the code from the app on your phone or tap the approval message sent to your smartphone.