If you're experiencing issues with the UK ETA app freezing when you confirm that your passport has a biometric chip, follow these steps to troubleshoot the problem:

1. Restart the App: Close the UK ETA app completely and restart it. Sometimes, apps freeze due to temporary glitches that can be resolved by a simple restart.

2. Check Compatibility: Ensure that your device is compatible with the UK ETA app. Verify that your operating system is up to date and that you're using a supported version of the app.

3. Clear App Cache:
- On your device, go to Settings.
- Find the Apps section.
- Locate the UK ETA app and select it.
- Tap on Storage, then choose Clear Cache. This process can help resolve issues caused by corrupted data.

4. Revalidate Your Passport: Make sure you are holding your passport correctly in front of the scanner. The biometric chip is usually located on the back page of the passport. You might need to adjust the position or the angle to ensure the app can read it properly - learn more.

5. Device Restart: If the problem persists, reboot your device. This can free up memory and resources, which may help in running the app smoothly.

6. Try a Different Device: If possible, attempt to complete the application on a different device. Sometimes the app might work better on another smartphone or tablet.

7. Update the App: Make sure your UK ETA app is updated to the latest version available on your app store. Developers often release updates to fix bugs and improve performance.

8. Check for Background Apps: Verify if there are any other apps running in the background that could interfere with the performance of the UK ETA app. Close unnecessary applications to free up resources.

9. Read Instructions Carefully: Check for any specific instructions provided on the screen regarding how to scan your passport. This may include tips on holding the passport still or at a particular angle.

10. Contact Support: If none of the above steps work, consider reaching out to UK ETA support for assistance. They may provide specific guidance based on your issue.

By following these steps, you should be able to resolve the freezing issue with the UK ETA app when confirming your passport’s biometric chip - learn more. If the problem continues after trying these methods, it's advisable to seek help directly from their support services.