I’m currently working on Now Mobile UI configuration and branding, and I’m finding it hard to validate visual changes efficiently.
For web UI, it’s easy to preview changes directly in the browser, but for Now Mobile it seems most UI updates (themes, colors, headers, layout behavior) only become fully visible on a physical device.
Is there any supported approach to:
Preview Now Mobile UI using a desktop-based emulator or simulator
Validate theme and UX changes without repeatedly deploying to a real device
Understand which UI elements can be reliably tested via Mobile App Builder vs on-device only
I’m trying to reduce iteration time during development and want to follow best practices recommended by the community.
Any guidance from people who have handled mobile UI testing workflows would be appreciated.
