I have run the test. Nothing is coming over when I take away the USB-connection. So it doesn't work out of the box.
There is the MD-BT01 midi adapter that goes into MIDI terminals and connects with Ipad/IOS only. So MIDI over Bluetooth exists, but not for Android.
But MIDI over wireless LAN seems to exist on Genos2. In the Genos2 reference manual, you find on page 153 a diagram with this title:
MIDI transmission/reception via the USB terminal, Wireless LAN, and MIDI terminals
The relationship between the MIDI terminals, Wireless LAN and the [USB TO HOST] terminal which can be used for
transmitting/receiving 32 channels (16 channels × 2 ports) of the MIDI messages is as follows;
You have to download the manual to see the diagram. The wireless LAN exist only on Genos1 and 2, not SX, I don't know for Tyros. Many Yamaha apps are for Ipad/Mac only, so I don't how to test it. In the apps that I have seen you have to choose a specific device to connect to, like MD-BT01.
In the Mobilesheets manual, there is a discussion on connections via Bluetooth. You will find it here: https://www.zubersoft.com/mobilesheets/MobileSheetsPro.pdf When I choose Bluetooth connection in the settings, Mobilesheets doesn't find my keyboard. I still believe Yamaha doesn't offer Bluetooth MIDI in the keyboards, only as external option.
You need someone with an Ipad with or without the MD-BT01 to test further, I think.