An apparatus and method for transmittingreceiving system information in a wireless communication system with a hierarchical cell structure are provided. The mobile wireless communications device may further include an antenna assembly including an antenna carrier frame coupled to the circuit board and defining a cavity therein, and an antenna element carried on the antenna carrier frame and having a plurality of spaced apart signal feed points coupled to the wireless communications circuit. 1 to about 5 weight percent of a thickening agent, and an effective amount of a GRAS or amino acid neutralizer to neutralize the thickening agent.