Currently, only Android devices are supported for Bluetooth connection with this product.ebike app instructionsConnect to BluetoothUse the QR code scanning interface to scan the QR code on the meter. Normally, after a period of time, the binding will be successful, and the vehicle condition details interface will be displayed.Riding details interface:When you enter this interface for the first time, you will apply for permission. You need to agree to the permission before the map-related functions can be used normally.After agreeing to the permission, the map will automatically locate the current location under normal circumstances. The map can be swiped to view other locations on the map. Click the positioning button in the lower right corner of the map window, and the map display area will return to the location of the phone. Click the button in the upper left corner of the map window to exit the map interface. The Bluetooth connection indicator at the top left of the lower window should display the connection status as normal.Click the start button at the bottom. Under normal circumstances, when the Bluetooth is connected, it will enter the navigation road planning interface. When the Bluetooth is not connected, a text will Pop-Up to remind the user that the Bluetooth is not connected.Note: When the authorization fails, you need to go to the mobile phone application authorization management interface to manually authorize the positioning permissionMaterial:plasticcolour:blackPackage Contents:1 * LCD DisplayOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.