Your devices. Your data.
Understand local data, screen capture and network activity in the Android and Windows clients.
Android local data
Saved devices and debugging identity stay on your phone. The identity is encrypted and excluded from cloud backup. The app keeps titles of the last 30 operations, without entered text or pairing codes. There are no accounts, ads or analytics SDKs, and no screen or file uploads to NATNT cloud services.
Screen sharing and permissions
Every live casting session needs system consent. Full-screen sharing can include visible notifications; single-app scope is chosen in Android's picker. Playback audio capture may request recording permission, but does not use the microphone. Stop sharing or revoke permissions at any time.
Files and recordings
Live phone casting does not save a screen recording. TV screenshots and recordings are saved in private app storage for preview, export or deletion. Uninstalling removes unexported copies. Photo and video casting stores a temporary copy on the TV, cleaned up when finished. After interruption, reconnect to clean registered leftovers.
TV companion components
First use of phone casting installs NATNT Cast Receiver over authorized ADB. The current remote no longer offers phone text input. NATNT TV Input installed by an older version can be switched away from or removed in TV settings.
Local discovery and web management
Local discovery runs only while the Devices page is in the foreground and probes broadcasts and common service ports. It does not automatically log in to or control devices. Turn off automatic discovery in Me. Web management opens the device’s own address in your browser; that device’s service handles login and data.
Speed tests and third-party endpoints
Only pressing Start connects to Cloudflare at speed.cloudflare.com. The endpoint receives your public IP, request information and generated test traffic. Uploads contain random data, not your files. Each test uses up to about 40 MiB, including on mobile data. Stopping, leaving the page or switching networks ends the test.
TV voice assistant
The voice button detects and requests an available TV assistant or search activity. It does not capture or forward your phone microphone. Voice input uses the TV or physical remote microphone and is handled by the TV system and its assistant.
Website and contact
This website uses 51.LA (51.la) to understand page visits, traffic sources and site usage. The service may process IP addresses, visited pages, referrers, browser and device information, and use cookies or similar identifiers. Blocking analytics does not prevent reading or downloading. Your manual language choice is stored locally and can be reset by clearing site data. The website does not connect to your TV; client screens, files and pairing codes are not uploaded as website analytics. Hosting, delivery and email providers process requests and messages as needed to provide their services. Contact: [email protected].
Windows local data and ADB authorization
Windows stores device, language, save-folder and uncleaned media-session settings in %LOCALAPPDATA%/NATNT/settings.json. It no longer writes new operation history. Local Android platform-tools manages ADB keys. Deleting the extracted program folder does not remove settings or exported files.
Windows screen, audio and networking
Capture starts only when you start it, for the selected display or window. Optional audio comes from the default playback device, not the microphone. One window does not isolate other apps’ audio. Lock, sleep or disconnection stops casting without automatically restarting capture. Cloudflare tests measure the PC connection. Discovery and web management do not automatically sign in to devices.