# How to Set Up Phone Authentication?

Category: Account Functions › Guide to Account Functions  
Source: https://help.coinunited.io/en/articles/how-to-set-up-phone-authentication  
Last updated: 2026-08-21

## CoinUnited.io APP

1. Go to "User" > "Security" on your CoinUnited.io APP

![CoinUnited.io APP](https://cu-api.com/helpcenter/uploads/security_app_3650a2dbde.webp)

2. Tap "Phone Authentication"

![CoinUnited.io APP (2)](https://cu-api.com/helpcenter/uploads/add_phone_app_96adc4581d.webp)

3. Tap "Set Up Phone Authentication"

![CoinUnited.io APP (3)](https://cu-api.com/helpcenter/uploads/on_add_phone_app_b15cd67ce6.webp)

4. Enter your phone number and tap "Send Code"

Enter your sms, email, and google 2FA verification code, then tap "Submit"

![CoinUnited.io APP (4)](https://cu-api.com/helpcenter/uploads/verify_add_phone_app_657686ca26.webp)

Your Phone Number is successfully added.

## CoinUnited.io Web Platform

1. Go to CoinUnited.io Web Platform, hover your mouse on the "User Icon" at the top right, then click "Account and Security"

![CoinUnited.io Web Platform](https://cu-api.com/helpcenter/uploads/security_pc_92d1c83814.webp)

2. Go to Phone Authentication, then click "Set up"

![CoinUnited.io Web Platform (2)](https://cu-api.com/helpcenter/uploads/add_phone_pc_58bf4458be.webp)

3. Enter your phone number and click "Send Code"  
Enter your sms, email, and google 2FA verification code. Then, click "Confirm"

![CoinUnited.io Web Platform (3)](https://cu-api.com/helpcenter/uploads/add_phone_popup_pc_05713d4a02.webp)

![CoinUnited.io Web Platform (4)](https://cu-api.com/helpcenter/uploads/add_phone_verify_pc_f64a213bf7.webp)

Your phone number is successfully added.

## Need More Help?

For further questions or issues, please visit our [Help Center](https://help.coinunited.io/) or use our chatbot for assistance.

We're here to help. Happy trading!