Can you recommend a good/cheap device for Fully Kiosk?

Not really. Results depend on the specific device, OS build, Fully Kiosk Configuration, and the websites or apps you use. Budget devices change quickly, and quality varies widely even within the same brand or price segment. Please review the known issues and select a device that meets your budget, quality, and performance requirements. If you plan to display websites, check that the device’s available WebView is up to date or can be updated. Test the Fully Kiosk app thoroughly on your devices with your content before deployment. Report any issues to info@fully-kiosk.com.