I have a Xiaomi Redmi 4A I bought in China a few months ago still running the Chinese ROM.
- Android version is 6.0.1 MMB29M
- MIUI version is MIUI 8.5 | Stable 18.104.22.168(MCCCNED)
- Laptop is MacBook Air running Sierra
The two are paired and I can connect easily. I can send files from the Mac to the phone using Bluetooth File Exchange.
I cannot use the Mac's "Browse files on device" feature because "The device does not have the necessary services".
From the phone's Bluetooth settings I can connect to the Mac but can't find any way to send a file. I can't find any app or tool on the phone for sending files or using Bluetooth. I've looked through the UI, in the Tools section, looked in the phone's storage using Explorer, and I've tried searching the phone for "transfer", "send", and "bluetooth".
I can transfer in both directions using a USB cable.
For this question I'm looking for a solution without any 3rd party apps. If it's not possible without such an app, that's an acceptable answer. I'm looking for non-USB solutions for this question.