Introduction

This article explains what SMS Authentication is and how it helps protect your Coinlocally account through two‑factor or multi‑factor authentication.

SMS Authentication is a verification method used in 2FA (Two‑Factor Authentication) or MFA (Multi‑Factor Authentication).

It works by sending a one‑time password (OTP) to your registered mobile number.

How it works

• A unique 6‑digit OTP is generated using a secure algorithm.
• The code is sent to your mobile phone via SMS.
• You enter this code to confirm your identity and complete login or security actions.

SMS Authentication ensures that only the person who has access to the registered phone number can authorize account activity.

Additional notes

• SMS codes expire quickly—enter them as soon as you receive them.
• Make sure your phone number is active and able to receive SMS messages.
• SMS Authentication is required for certain security actions.

Common Issues

• Delayed SMS delivery due to network issues.
• Incorrect phone number prevents receiving codes.
• Entering an expired OTP results in an error.

Tip: Restart your phone or switch to airplane mode briefly if SMS messages are delayed.

feeling lost?

If you're not receiving SMS codes or unsure how SMS Authentication works, our support team is available 24/7 to help you.

Updated on: 01/18/2026