ChatGPT Voice stopped working on mobile data (works only on Wi-Fi or with VPN) – Pixel 10 Pro

Understanding Voice Functionality Issues with ChatGPT on Mobile Data: A Case Study from a Pixel 10 Pro User

Introduction

In today’s digital age, AI-powered voice assistants like ChatGPT Voice have become increasingly popular, offering users seamless interactions and assistance. However, technical glitches can occasionally disrupt the user experience. This article examines a specific connectivity issue encountered by a Pixel 10 Pro user, exploring the symptoms, troubleshooting steps taken, and potential solutions.

Device and Network Context

The user operates a Google Pixel 10 Pro running Android 16, utilizing ChatGPT Plus (version 1.2025.287). The mobile network is Telstra 5G in Australia. Notably, the voice assistant functions flawlessly when connected via Wi-Fi but encounters problems exclusively on mobile data—either displaying “Connection failed, tap to retry” or failing to respond altogether.

Observed Issue

• Successful operation over Wi-Fi
• Failure or unresponsiveness on mobile data (5G)
• Enabling a VPN (Google VPN) restores functionality, indicating a network-related issue

Comparison with Similar Devices

Interestingly, the user’s spouse, equipped with a Pixel 7 Pro and using the same network provider, does not experience these issues with the standard ChatGPT (non-Plus) version. This suggests that the problem may be device-specific or related to app configuration.

Troubleshooting Efforts

The user has undertaken a comprehensive set of troubleshooting steps:

• Reinstallation of the ChatGPT app with cache and data cleared
• Disabling Private DNS settings
• Verifying all app permissions and background data allowances
• Switching APN protocol settings to IPv4
• Disabling Adaptive Connectivity features
• Resetting network settings
• Testing with both Advanced Voice and standard voice modes

Despite these measures, the problem persists—voice features operate correctly only over Wi-Fi or when connected through a VPN.

Discussion and Potential Causes

The scenario indicates that the issue may stem from network restrictions or configurations affecting the app’s ability to communicate over cellular data. Possibilities include:

• Carrier-specific restrictions or network policies
• AFC (Access Function Control) or other network filtering settings
• Compatibility issues between the app and certain network protocols
• Firewall or security settings imposed by the cellular network

Possible Solutions

While the user has already tried numerous troubleshooting steps, further suggestions include:

1. Contact Carrier Support: Confirm if there are any known restrictions or configurations impacting data connections for voice-enabled AI services.

2. Update Network Settings: