Mobile wireless communications device with ddpdt rf switch and related methods

A mobile wireless communications device (10) may include an antenna (12) , primary RF receivers (21a-21c) configured to operate at different RF bands, each primary RF receiver having a differential input, and secondary RF receivers (22a-22c) also configured to operate at the different RF bands, each secondary RF receiver having a differential input. The mobile wireless communications device may also include first and second RF filters (16-17) coupled to the antenna and configured to respectively pass first and second RF bands from among the different RF bands, and a first DDPDT RF switch (14) coupled between the first and second RF filters and the differential inputs of respective first ones of the primary and secondary RF receivers (21b, 22b).