Modern Android devices often integrate Ultra-Wideband (UWB) radios, a short-range wireless communication protocol that operates at very high frequencies to provide pinpoint spatial awareness and directional capabilities. UWB is primarily utilized for precise indoor tracking, securely unlocking compatible digital car keys, and hyper-accurate file sharing (like Nearby Share/Quick Share). While highly advanced, UWB continuously broadcasts precise ranging pulses that can theoretically be intercepted or analyzed to map device movement with centimeter-level accuracy. In highly classified, air-gapped, military, or strict zero-trust operational environments, enabling UWB creates a severe physical tracking and side-channel vulnerability.
This guide explains how to completely disable ‘Ultra-Wideband’ (UWB) system-wide on Android, enforcing a strict zero-trust model where all UWB radio transmissions are cryptographically blocked.
Disable Ultra-Wideband (UWB) Radio
To enforce a strict block against precise spatial tracking, we must sever the core OS-level permission that allows the Android kernel to power and utilize the UWB hardware.
- Unlock your Android device and open the main Settings app.
- Tap on Connected devices.
- Tap on Connection preferences (on some devices, this may be located under More connection settings).
- Locate and tap on Ultra-Wideband (UWB). (If this option is missing, your specific device hardware does not feature a UWB radio chip, and you are already secure against this specific vector).
- You will see a master toggle switch labeled Allow Ultra-Wideband.
- Toggle the switch to the Off position. (By explicitly disabling this toggle, you instruct the Android cellular and connectivity firmware to immediately cut power to the UWB transmitter and permanently block any application or system service from utilizing precise spatial ranging APIs).
Verify the Configuration Lockdown
By toggling this master switch, the Android device is immediately blinded to precise UWB spatial positioning.
To verify the lockdown is active, return to Settings > Connected devices > Connection preferences. Ensure the Ultra-Wideband setting indicates that it is “Off.” Furthermore, attempting to use a UWB-reliant feature (such as precision finding for a smart tag or a digital car key relying strictly on UWB proximity) will immediately fail or fall back to standard, less-precise Bluetooth Low Energy (BLE). The Android device is now operating under a strict zero-trust OPSEC configuration, completely mitigating the risk of precise spatial tracking.