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Codex Asks for SMS Verification on Open? Don't Just Switch Numbers—Handle It in This Order
When ChatGPT web or the Codex client suddenly prompts for phone verification, it's usually a triggered account-level security check, not a bug. This article explains common triggers, OpenAI's restrictions on number types (VoIP and landlines rejected, max 3 accounts per number, no self-service rebinding), and the complete handling order from stopping to investigate to switching to a real carrier number you can keep long-term.
Stuck at Codex Login Verification? Try Using a SMS Receive Platform
Many developers face forced phone verification when logging into the Codex desktop client; using a reliable SMS receive platform for overseas temporary numbers can quickly bypass this step.
Codex Login Phone Verification: A Practical Guide Using SMS Reception Platforms
A step-by-step guide on using SMS reception platforms like NexSMS to bypass Codex login phone verification triggered by OpenAI's tightened security.
2026 Latest Codex Phone Verification Guide: How to Solve ChatGPT Phone Verification in China
A comprehensive guide for Chinese users to bypass OpenAI's phone verification for Codex, covering methods using overseas SIM cards and SMS reception platforms like NexSMS.
