No, you cannot log in to the Indodax app using only your phone number. Indodax employs a multi-layered security system and two-factor authentication that requires you to use a combination of credentials. To keep your digital assets secure, logging in to the Indodax app always requires a combination of your email address and password. Your phone number serves only as an additional channel for receiving 2FA verification codes if you choose SMS OTP. To access your Indodax account, you must use a combination of two to three of the following security factors:

1. Email Address (Primary Credential)

Your email address serves as your primary login ID and your digital identity on Indodax. This is the most basic layer of security that you must enter first, followed by your password.

2. Password

Your password is a secret key linked to your email address. This combination of email and password forms your first layer of security.

3. Two-Factor Authentication (2FA)

After entering your email and password, you must pass through the third layer of security (2FA), and this is where your phone number comes into play:

• Google Authenticator (GA): The most recommended and secure method, which does not rely on a phone number.

• SMS OTP: If you enable this feature, the system will send a verification code to your registered phone number. The phone number is used only to receive verification codes, not to log in to your account.