We've all seen those commercials where Verizon boasts about the breadth of its network, but what of the depth? Turns out, at least in some cities, that Big Red's LTE is so over-taxed that users are being downgraded to 3G. Executive Fran Shammo has admitted that Verizon's capacity in places like New York and San Francisco is running out, but promised that the troubles should be fixed by the end of 2013. The company has pledged an extra $500 million in investment to remedy the issue, in addition to promising that, when it comes to capacity, Verizon will be "ahead of the curve" going into next year -- presumably before holding up a sign marked AWS Band 4 and winking at an imaginary camera.