With BlueDV Connect, you can make D-STAR QSOs using your Android device and a Kenwood TH-D75. There's no need for a hotspot. Simply connect your TH-D75 to your Android device via Bluetooth, and you're ready to go. You can keep your Android device in your pocket because BlueDV Connect can operate in the background with the screen off. If you want to see who is talking, you can check on your Wear OS device.