A wireless end-user device, comprising: a plurality of wireless modems, each to perform network access for service activities over one or more wireless networks (109, 110); and one or more processors configured to classify each of a plurality of wireless end-user device service activities into one of a plurality of categories, characterized in that the plurality of categories include: a network-capacity controlled service activity category, a disallowed service activity category, wherein classifying any of the plurality of wireless end-user device service activities into the disallowed service activity category, for at least some activities, is based at least in part on a user input, and a non-network capacity controlled service activity category, wherein classifying any of the plurality of wireless end-user device service activities into non-network capacity controlled service activity category is based at least in part on whether the particular one of the plurality of wireless end-user device service activities is associated with an application that is interacting with a user of the wireless end-user device, and control network access currently available through the one or more of the wireless modems to disallow network access for any of the plurality of wireless end-user device service activities that is classified into the disallowed service activity category, allow network access for any of the plurality of wireless end-user device service activities that is classified into the non-network capacity controlled service activity category, and time-window network access for any of the plurality of wireless end-user device service activities that is classified into the network-capacity controlled service activity category, the time-windowing network access comprising allowing network access for one of the plurality of wireless modems for a first period of time and disallowing network access for the one of the plurality of wireless modems for a second period of time. a plurality of wireless modems, each to perform network access for service activities over one or more wireless networks (109, 110); and one or more processors configured to classify each of a plurality of wireless end-user device service activities into one of a plurality of categories, characterized in that the plurality of categories include: a network-capacity controlled service activity category, a disallowed service activity category, wherein classifying any of the plurality of wireless end-user device service activities into the disallowed service activity category, for at least some activities, is based at least in part on a user input, and a non-network capacity controlled service activity category, wherein classifying any of the plurality of wireless end-user device service activities into non-network capacity controlled service activity category is based at least in part on whether the particular one of the plurality of wireless end-user device service activities is associated with an application that is interacting with a user of the wireless end-user device, and control network access currently available through the one or more of the wireless modems to disallow network access for any of the plurality of wireless end-user device service activities that is classified into the disallowed service activity category, allow network access for any of the plurality of wireless end-user device service activities that is classified into the non-network capacity controlled service activity category, and time-window network access for any of the plurality of wireless end-user device service activities that is classified into the network-capacity controlled service activity category, the time-windowing network access comprising allowing network access for one of the plurality of wireless modems for a first period of time and disallowing network access for the one of the plurality of wireless modems for a second period of time. a network-capacity controlled service activity category, a disallowed service activity category, wherein classifying any of the plurality of wireless end-user device service activities into the disallowed service activity category, for at least some activities, is based at least in part on a user input, and a non-network capacity controlled service activity category, wherein classifying any of the plurality of wireless end-user device service activities into non-network capacity controlled service activity category is based at least in part on whether the particular one of the plurality of wireless end-user device service activities is associated with an application that is interacting with a user of the wireless end-user device, and control network access currently available through the one or more of the wireless modems to disallow network access for any of the plurality of wireless end-user device service activities that is classified into the disallowed service activity category, allow network access for any of the plurality of wireless end-user device service activities that is classified into the non-network capacity controlled service activity category, and time-window network access for any of the plurality of wireless end-user device service activities that is classified into the network-capacity controlled service activity category, the time-windowing network access comprising allowing network access for one of the plurality of wireless modems for a first period of time and disallowing network access for the one of the plurality of wireless modems for a second period of time.