A wireless end-user device, comprising: a processor; a wireless wide area network, WWAN, modem to communicate data for network service usage activities between the device and a WWAN, when connected to a WWAN; a wireless local area network, WLAN, modem to communicate data for network service usage activities between the device and a WLAN, when connected to a WLAN; and a computer-readable storage medium storing instructions that, when provided to the processor, cause the processor to classify, as a first classification, whether data for network service usage activities is to be communicated through the WWAN modem or the WLAN modem, classify, as a second classification, whether a network service usage access request is associated with a background activity of a particular device application, and apply a traffic control policy to the network service usage access request, based on (i) the first and second classifications, and (ii) a network service usage activity classification list distinguishing between a first one or more applications resident on the device and a second one or more applications resident on the device, such that, when the particular device application is one of the first one or more applications, the instructions cause the processor to block the network service usage access request in a first state of the first and second classifications, wherein data for network service usage activities is classified as to be provided through a particular one of the WWAN and WLAN modems (1812, 1813), and the network service usage access request is associated with a background activity of the particular device application, and allow the network service usage access request under at least one different state of the first and second classifications. a processor; a wireless wide area network, WWAN, modem to communicate data for network service usage activities between the device and a WWAN, when connected to a WWAN; a wireless local area network, WLAN, modem to communicate data for network service usage activities between the device and a WLAN, when connected to a WLAN; and a computer-readable storage medium storing instructions that, when provided to the processor, cause the processor to classify, as a first classification, whether data for network service usage activities is to be communicated through the WWAN modem or the WLAN modem, classify, as a second classification, whether a network service usage access request is associated with a background activity of a particular device application, and apply a traffic control policy to the network service usage access request, based on (i) the first and second classifications, and (ii) a network service usage activity classification list distinguishing between a first one or more applications resident on the device and a second one or more applications resident on the device, such that, when the particular device application is one of the first one or more applications, the instructions cause the processor to block the network service usage access request in a first state of the first and second classifications, wherein data for network service usage activities is classified as to be provided through a particular one of the WWAN and WLAN modems (1812, 1813), and the network service usage access request is associated with a background activity of the particular device application, and allow the network service usage access request under at least one different state of the first and second classifications. classify, as a first classification, whether data for network service usage activities is to be communicated through the WWAN modem or the WLAN modem, classify, as a second classification, whether a network service usage access request is associated with a background activity of a particular device application, and apply a traffic control policy to the network service usage access request, based on (i) the first and second classifications, and (ii) a network service usage activity classification list distinguishing between a first one or more applications resident on the device and a second one or more applications resident on the device, (i) the first and second classifications, and (ii) a network service usage activity classification list distinguishing between a first one or more applications resident on the device and a second one or more applications resident on the device, such that, when the particular device application is one of the first one or more applications, the instructions cause the processor to block the network service usage access request in a first state of the first and second classifications, wherein data for network service usage activities is classified as to be provided through a particular one of the WWAN and WLAN modems (1812, 1813), and the network service usage access request is associated with a background activity of the particular device application, and allow the network service usage access request under at least one different state of the first and second classifications. block the network service usage access request in a first state of the first and second classifications, wherein data for network service usage activities is classified as to be provided through a particular one of the WWAN and WLAN modems (1812, 1813), and the network service usage access request is associated with a background activity of the particular device application, and allow the network service usage access request under at least one different state of the first and second classifications.