4. When using an phone or , you must be to access the and download the APP 2. Turn on Bluetooth on your phone Please check the following before using this device:1. Your smartphone or tablet has been connected to a 2.4G WiFi that can access the Internet (5G WiFi is not supported yet) 3. If you use an Android phone or tablet, the system must be version 4.0 or 5. If your wireless router is set up with address filtering, please enter the router background to turn off the filtering function., Manufacturer: Jrudjsnhhty