In the blogpost on the new PS5 update:
PS5 September System Software Update launches globally tomorrow
Includes new UX features and customization options, 3D Audio for built-in TV speakers, and M.2 SSD storage expansion
blog.playstation.com
- With the PS Remote Play app, players have enjoyed the ability to remotely stream and play PS4 and PS5 games, switch between games, and browse their console's menus on any compatible device connected to their broadband network.*** Now, players using the mobile app for iOS and Android have the option of using a mobile data connection when WiFi is not available.
- Broadband internet with at least 5Mbps is required for PS Remote Play. For the best experience, we recommend a high-speed connection with upload and download speeds of at least 15 Mbps.
- To help manage the amount of data used through a mobile connection, players can select their preferred video quality for mobile data streaming.
- Please note the quality and connectivity of your Remote Play experience may vary depending on your mobile carrier network and network environment.