Claude Account Registration & Phone Verification: A Complete Step-by-Step Guide for New Users

Recently, a lot of people have been asking me how to register for Claude, especially the phone verification step where they always get stuck. The process is not actually that complicated, but there are a few details you need to watch out for. This tutorial will take you step by step through the registration, phone number binding, and account security settings so you can smoothly access the Claude chat interface.

What You Need Before Registering

Before you start, check two things: an email address that can send and receive emails normally (Gmail, Outlook, or major domestic email providers all work), and a mobile phone that can receive SMS messages. If you're using a domestic phone number, make sure it can receive international SMS—some virtual carrier numbers may be blocked.

Also, it's a good idea to install the official Claude app (iOS or Android) in advance. The web version works exactly the same way—just open claude.ai in your browser. A stable internet connection is recommended to avoid interruptions that could cause the verification code to expire.

Email Registration & Initial Verification

Open the Claude website or app, and click "Sign up" to go to the registration page. Enter your email address, and the system will immediately send a verification email to that address. If you don't see it in your inbox, be sure to check your spam folder—it sometimes gets flagged by mistake.

Click the "Verify Email" button in the email, and the page will redirect you to set a password. We recommend using a strong password—a combination of uppercase and lowercase letters, numbers, and symbols is more secure. After confirming, Claude will ask you to proceed to the next step: phone verification.

Phone Number Verification & Account Binding

Phone verification is where many beginners hit a snag. Select your country or region—for example, choose "China (+86)" if you're in China—and enter your phone number. Click to send the verification code, then wait for the SMS. If you don't receive it within 2 minutes, don't rush to resend—first check that the number format is correct.

Once you receive the 6-digit verification code, enter it on the page and the binding is complete. Note that one phone number can only be bound to one Claude account. If you want to use a different number to log into another account, you need to unbind the old one first. Also, if you see a message like "This number is already in use," it may mean you've registered another account before—just switch to a phone number that hasn't been registered yet.

Login & Multi-Device Switching Tips

After registration, you can log in next time using your email and password, or use the Google account quick login (if you linked a Google account during signup). Claude supports logging into multiple devices simultaneously—your phone and computer can sync conversation history seamlessly.

If you want to log in on another device, simply enter the same account credentials, and the system will automatically sync your past messages. However, avoid logging in from different locations frequently, as this may trigger a security check requiring you to re-verify your email or phone number. It's recommended to enable two-step verification in Settings to further protect your account.