First, go to Account settings > Personal info on a web or mobile browser and add your phone number if you haven’t already. Then:
- Go to Account settings > Login & Security or Personal info
- From the Set-up 2-step authentication banner at the top of either page, click or tap Set up now
- Choose how you’d like to receive your one-time passcode—via text (SMS) or a phone call—and enter it when prompted
- Create a personal identification number (PIN)
- Add security questions that only you can answer
To edit your PIN or security questions, click Forgot PIN?