Hi there! I understand your Jami app is freezing or hanging up during video chats on your WebKit-based Android 10 device. I'd love to help you get this sorted out.

To start, could you tell me if this happens every time you initiate a video call or just occasionally? Also, have you noticed if the app freezes right at the start of the call or after some time into the video chat?

In the meantime, here are some step-by-step suggestions to try that typically help with video call freezes:

1. Check Internet Connection: Since video calls require good bandwidth, ensure you're on a stable Wi-Fi or strong mobile data connection. Poor connectivity can cause freezing.

2. Close Background Apps: Running many apps can consume RAM and processing power, leading to freezes. Please close any other apps running in the background.

3. Clear Jami App Cache: Caches can sometimes cause issues. You can clear the cache by going to Settings > Apps > Jami > Storage > Clear Cache.

4. Update the App: Make sure you have the latest version of Jami installed, as updates often fix bugs related to video calling.

5. Reinstall Jami: If the problem persists, uninstalling and reinstalling the app can help resolve corrupted files.

6. Check Permissions: Ensure Jami has permission to access your camera and microphone: Settings > Apps > Jami > Permissions.

If you've already tried these, let me know which ones, and I can guide you through more advanced troubleshooting. Also, if you have any error messages or the app crashes with any specific notes, that info will help a lot.

Are you satisfied with starting with these suggestions so far?