HD and 4K
The service catalogs stream in HD and, on the right plan and device, 4K with HDR. A Firestick 4K or 4K Max plays them at full quality in each service's own app.
Data
An hour of HD uses about 1.5 to 3 GB and an hour of 4K about 7 GB.
Picture quality on CyberFlix
HD and 4K on the services, and what a Firestick 4K needs.
Related help
What is CyberFlix? The app, the Stremio catalog and this site
The three things the name CyberFlix means: the CyberFlix TV Android app, the CyberFlix Catalog add-on for Stremio, and this browser catalogue.
CyberFlix "No data": what the message means and what to use now
Why the CyberFlix TV app shows "No data", and how to get a working catalog on the same Firestick or phone.
CyberFlix on Firestick: open it in Silk and keep it on your home screen
How the "cyberflix on firestick", "downloader code" and "install cyberflix on firestick" searches are answered today.
