If you have a bolt device,and plug in a SIM card,this application will help you control your device.For example you can make your phone connected to WiFi,and allows you to control WiFi account password at any time,and some use of WiFi permissions,similar to a small mobile router device.At the same time you can also add an additional SD card to the device, in this application can be achieved SD card data and mobile phone storage data interoperability.