Firstly, the antennas used in Teltonika devices differ mechanically in connector types. Mobile connectivity antennas use SMA male connectors, while Wi – Fi uses RP – SMA female connectors which means that antennas have to be connected accordingly. Adapters might be used, but inclusion of such tools increases signal losses and negatively impacts connection quality. The use of two antennas for the same type of connectivity allows to improve signal quality by using MIMO, but one antenna for each type of connectivity is enough. Moreover, cellular and Wi – Fi are two different technologies, utilizing different frequency bands, and, since antenna length is defined by the frequency used, mobile and Wi – Fi antennas are tuned for operating in different bands. Mobile and Wi – Fi ranges partially overlap at the higher end of mobile spectrum, so Wi – Fi antenna will receive mobile signals if connected to mobile interface and vice versa, however, the quality of received service will probably be reduced. Overall, it is best to use dedicated antennas.