For Android Users: Usually, connecting your devices to the Mighty series amplifiers is the same as connecting a Bluetooth speaker. Turn on the Bluetooth, search for the devices, select the amplifier, and it's done. If you are having a connection problem: 1. turn on the "GPS Services" on your device, 2. reopen Mighty Amp app, and 3. allow it to turn Bluetooth on. Now your device is successfully connected, only one step to go: Go to Settings (at the right bottom). Normally you can see your device's name here. If it's not, go to Select Device and choose your amplifier. All set. Now you can activate the MIDI control, tweak the parameters and control your NUX amplifier with your mobile device.