Bluetooth, separate remotes and internet control
Identify the connection type before comparing range or features.
Separate the phone link from the internet link
Bluetooth pairs nearby hardware. Some apps add internet-based control separately, which can require an account or another phone. A Bluetooth listing alone cannot establish support for those features.
Distinguish a physical remote from a phone app
A bundled remote can be separate from app connectivity. Check the box for which controller is included and what works when a phone is unavailable. The remote-control guide compares those broader formats.
Check the maker’s current download page
Confirm the exact app and supported platform. For example, ZALO publishes a ZALO Remote download guide. Follow the instructions for your model when the app has changed since the box was printed.