Dear developer,
Pico Neo 3 supports Bluetooth BLE. To be more specific, when using BLE, normally the application will need Android ACCESSFINELOCATION permission, on Pico Neo 3 system you can aquire this permission, but our system removed location related module, which means if this external BLE device also need Android location related service, such as GPS, then it cannot work with our HMD. However, if the BLE device just need to connect via BLE and transfer data, then there is no problem.