① Deleting MOTHER information from your previous device. ・In the Android (old) MOTHER app, tap the icon at the top left corner and select 'Unpair' from the settings screen. Once unpairing is successful, you will be redirected to the device registration screen. ・Uninstall the MOTHER app. ・Delete MOTHER from your smartphone's Bluetooth setting. ② Registering on a new smartphone. Pair MOTHER with the smartphone you intend to use from now on. Note: If the pairing indicator doesn't light up, try performing a factory reset.