Cell phone sized antennas are quite small, especially compared to a 40-70 inch typical US home TV these days. The electronics to connect to a cell network and

Cell phone sized antennas are quite small, especially compared to a 40-70 inch typical US home TV these days. The electronics to connect to a cell network and send useful data over it is probably $10-20, tops, plus the cost of the usage (but that's all dependent upon usage and negotiation of rates). I'd say, if there's a corporate reason to want data from the TV even if the consumer doesn't connect their Ethernet/wifi, the cost and complexity of adding in cell connectivity isn't very high these days.