Claude 4 phone verification guide 2025: fast, safe SMS

Need to pass Claude 4 phone verification but stuck on number support or delivery? This guide shows a reliable, privacy-first path to receive codes quickly and complete verification without hassle.

Why Claude 4 requires phone verification

• Security and compliance: mitigate abuse and meet regional rules
• Account recovery: phone helps reset and protect your account
• Regional availability: some regions and carriers are restricted

Recommended approach: SMS-Act for quick, private codes

SMS-Act provides global temporary numbers and optimized delivery for Claude 4 phone verification:

• High success rate across major AI platforms
• 100+ countries available; flexible number choices
• Codes usually arrive in seconds
• Temporary numbers keep your personal SIM private

Step-by-step (about 10 minutes)

1) Set up and top up

1. Create an account at SMS-Act Console
2. Verify email and add a small balance

2) Pick service and country

1. Search for “Claude” or “Anthropic” in services
2. Prefer US/UK/CA/AU for the best stability and acceptance
3. Click “Get number” and confirm pricing/time window

3) Trigger verification on Claude

1. Open claude.ai and start the phone verification flow
2. Select the matching country code and paste the SMS-Act number
3. Send the code

4) Receive and submit the code

1. Check “My numbers/Orders” in SMS-Act for the SMS
2. Copy the one-time code into the Claude page
3. Once verified, enable a strong password and 2FA

Troubleshooting and tips

Not receiving codes?

• Switch country/route and retry (US/UK/CA often work best)
• Wait 60–120 seconds before resending to avoid rate limits
• Try an incognito window and a clean network path

Verification rejected?

• Ensure country code and number format match exactly
• A temporary number is typically one-time; buy a fresh one if needed
• For repeated failures, replace the number; refunds apply per platform policy

Improve success rates

• Prefer mainstream English-speaking routes (US/UK/CA/AU)
• Reduce retries; keep browser/session consistent
• Avoid heavy extensions and clear stale cookies/cache

Related reading

• General Claude verification guide
• How to use SMS platforms effectively
• International numbers for verification

Finish Claude 4 phone verification now

For a fast, privacy-first Claude 4 phone verification experience, SMS-Act’s global numbers and delivery optimization make the process straightforward. Get a suitable number and complete the flow in minutes.

Get started

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