We are developing a device including LAN, 3G and Wifi. We have launched a LAN communication with the MQX stack and this is working correctly. Now we are working with 3G through UC20 module of Quectel. We send the at commands via UART interface to the maximum speed (921600), but we think that this speed is not enough and we think that USB interface is best. On the other hands to wifi module, we are looking various modules, but we are not sure that is best. Has someone worked with modules 3G and wifi? Can someone advise the best way to work? Has someone had a bad experience working with these modules and MQX?