A mobile wireless communications device comprising: a portable housing having an upper portion and a lower portion; a circuit board carried by said portable housing; a wireless communications circuit carried by said circuit board; an audio circuit carried by said circuit board; and a first audio transducer in the upper portion of said housing and coupled to said audio circuit; the mobile wireless communications device further comprising: an antenna assembly comprising: an antenna carrier frame in the lower portion of the housing, wherein the antenna carrier frame is coupled to said circuit board and has a plurality of surfaces including a front surface, a bottom surface and a back surface, and wherein the antenna carrier frame defines a cavity and an acoustic port therein, and a flex antenna comprising: a flexible substrate, and a plurality of wrap-around antenna elements (40, 41) disposed on said flexible substrate, wherein the flexible substrate is carried on the front, the bottom and the back surfaces of said antenna carrier frame, and wherein the plurality of wrap-around antenna elements comprise a plurality of spaced apart signal feed points (80', 81', 82') coupled to said wireless communications circuit; and a second audio transducer carried within the cavity of said antenna carrier frame and coupled to said audio circuit, wherein said antenna carrier frame and said flexible substrate encapsulate the second audio transducer within the cavity to provide an acoustic enclosure for the second audio transducer. a portable housing having an upper portion and a lower portion; a circuit board carried by said portable housing; a wireless communications circuit carried by said circuit board; an audio circuit carried by said circuit board; and a first audio transducer in the upper portion of said housing and coupled to said audio circuit; an antenna assembly comprising: an antenna carrier frame in the lower portion of the housing, wherein the antenna carrier frame is coupled to said circuit board and has a plurality of surfaces including a front surface, a bottom surface and a back surface, and wherein the antenna carrier frame defines a cavity and an acoustic port therein, and a flex antenna comprising: a flexible substrate, and a plurality of wrap-around antenna elements (40, 41) disposed on said flexible substrate, wherein the flexible substrate is carried on the front, the bottom and the back surfaces of said antenna carrier frame, and wherein the plurality of wrap-around antenna elements comprise a plurality of spaced apart signal feed points (80', 81', 82') coupled to said wireless communications circuit; and an antenna carrier frame in the lower portion of the housing, wherein the antenna carrier frame is coupled to said circuit board and has a plurality of surfaces including a front surface, a bottom surface and a back surface, and wherein the antenna carrier frame defines a cavity and an acoustic port therein, and a flex antenna comprising: a flexible substrate, and a plurality of wrap-around antenna elements (40, 41) disposed on said flexible substrate, wherein the flexible substrate is carried on the front, the bottom and the back surfaces of said antenna carrier frame, and wherein the plurality of wrap-around antenna elements comprise a plurality of spaced apart signal feed points (80', 81', 82') coupled to said wireless communications circuit; and a flexible substrate, and a plurality of wrap-around antenna elements (40, 41) disposed on said flexible substrate, wherein the flexible substrate is carried on the front, the bottom and the back surfaces of said antenna carrier frame, and wherein the plurality of wrap-around antenna elements comprise a plurality of spaced apart signal feed points (80', 81', 82') coupled to said wireless communications circuit; and a second audio transducer carried within the cavity of said antenna carrier frame and coupled to said audio circuit, wherein said antenna carrier frame and said flexible substrate encapsulate the second audio transducer within the cavity to provide an acoustic enclosure for the second audio transducer.