Despite price war, U.S. wireless bills are going up

T-Mobile US (NYSE:TMUS) and AT&T Mobility (NYSE:T) are continuing to change their prices, in T-Mobile's case by increasing data allotments and in AT&T's case by simply cutting prices. Verizon Wireless (NYSE:VZ) and Sprint (NYSE:S) have also been making moves to stay competitive. However, that doesn't necessarily mean that the average U.S. wireless bill has been going down despite investor fears of a price war. According to New Street Research data cited by the Wall Street Journal, the average monthly revenue per postpaid customer across the industry increased 2.2 percent to $61.15 in the fourth quarter of 2013, up more than $5 per user from the first quarter of 2010, when the same measure was at $55.80. Article (sub. req.)