Hugh Pickens writes: "The WSJ reports that Verizon Wireless, the country's largest wireless carrier, is confident enough in its network that it will offer unlimited data-use plans when it starts selling the iPhone around the end of this month, a person familiar with the matter says. Such plans would provide a key means of distinguishing its service from rival AT&T Inc., which limits how much Internet data its customers may use each month. Verizon has a lot at stake as it starts to carry the iPhone, which it will announce Tuesday at an event in New York City, people familiar with the matter say. Verizon more than any other U.S. carrier has built its reputation on its network quality, and any stumble in handling iPhone traffic will call into question Verizon's major selling point. On the other hand, if it does handle the iPhone well, then AT&T will have a harder time arguing it didn't mismanage its own network. Anthony J. Melone, Verizon's chief technology officer, says the company has invested heavily in its 3G network to handle surging smartphone traffic including nine million Android subscribers, up from none a year earlier. "We added enormous capacity to the network in one fell swoop," says Melone. "It is there waiting for us to grow into it. That will help me tremendously with my 3G network.""