A mobile electronic communications device 100 is at least partially covered or encased in a composite housing 123, 134, 168 and 188. The composite housing can have at least one conductive housing portion 220 and 223 comprising a conductive material and at least one non-conductive housing portion 224 and 226 comprising a non-conductive material. Preferably, the non-conductive housing portion is positioned in proximity to an antenna 202, a battery door 194 or cover for a battery 126, in the mobile electronic communications device.