A wireless communications device comprising: a radio frequency transceiver; an antenna matching and tuning circuit (AMTC) coupled to an output of the RF transceiver; an antenna element coupled to an output of the AMTC by a first coupling capacitor and RF connected by a second low frequency blocking capacitor to ground to prevent a flow of low frequency signals to ground, wherein the AE is a first component of a capacitive touch and proximity sensor (CTPS) which includes a high impedance component directly coupled to the AE; a detection integrated circuit connected to the HIC of the CTPS and which is configured to: detect a change in capacitance of the CTPS caused by proximity of an object to the antenna element, while the antenna element is being used to communicate RF signals; which is further configured to: responsive to detection of the change in capacitance of the CTPS, trigger a transmission of at least one control signal to the AMTC to provide an appropriate antenna tuning to offset antenna de-tuning caused by the proximity of the object to the antenna element; a modem coupled to the RF transceiver; and an application processor that is coupled to the detection IC and the modem, wherein the application processor is configured to: (a) selectively enable operation of the detection IC based on information received from the modem about RF signal power at the AE; (b) receive object detection signal information from the detection IC; and (c) generate, using the information about RF signal power and the object detection signal information, (i) antenna tuning control signals and (ii) power tuning parameters to trigger a transmit power adjustment. a radio frequency transceiver; an antenna matching and tuning circuit (AMTC) coupled to an output of the RF transceiver; an antenna element coupled to an output of the AMTC by a first coupling capacitor and RF connected by a second low frequency blocking capacitor to ground to prevent a flow of low frequency signals to ground, wherein the AE is a first component of a capacitive touch and proximity sensor (CTPS) which includes a high impedance component directly coupled to the AE; a detection integrated circuit connected to the HIC of the CTPS and which is configured to: detect a change in capacitance of the CTPS caused by proximity of an object to the antenna element, while the antenna element is being used to communicate RF signals; which is further configured to: responsive to detection of the change in capacitance of the CTPS, trigger a transmission of at least one control signal to the AMTC to provide an appropriate antenna tuning to offset antenna de-tuning caused by the proximity of the object to the antenna element; a modem coupled to the RF transceiver; and an application processor that is coupled to the detection IC and the modem, wherein the application processor is configured to: (a) selectively enable operation of the detection IC based on information received from the modem about RF signal power at the AE; (b) receive object detection signal information from the detection IC; and (c) generate, using the information about RF signal power and the object detection signal information, (i) antenna tuning control signals and (ii) power tuning parameters to trigger a transmit power adjustment.