Offline use and installation
Native Android has no internet permission; the PWA needs an initial load.
The native application and its bundled help work without Wi-Fi or mobile data. Reception still needs the compatible physical receiver, antenna, power and USB permission.
Open the website online and allow its offline cache to finish installing before relying on it away from a connection. A new browser, cleared site data, private mode or storage eviction may leave no cached copy.
An installed PWA remains a browser application. Installation does not grant native USB, NFC, Bluetooth or location capabilities that the browser lacks.
External support, hardware listings and cloud destinations are separate services. Opening or using them may require internet access in that browser or provider, even though the BandSight Android process stays offline.