Cellphone Users Steaming at Hit-or-Miss Service

To wireless customers, cellphone networks might seem to be made out of thin air. But they are plenty vulnerable to catastrophic storms — and bringing service back can take an excruciatingly long time.

On November 2, four days after Hurricane Sandy, the major carriers — AT&T, Verizon Wireless, T-Mobile USA and Sprint — were still busily rebuilding their networks in the hardest-hit areas. One-quarter of the cell towers in the storm zone were knocked out, according to the Federal Communications Commission. Many had no power, and their backup battery systems soon drained. The lines connecting those towers to the rest of the phone network were ripped out. Carriers deployed generators to provide power, but eventually those required more fuel — another limited resource. In an emergency, a lack of cellphone reception can be dangerous, especially as more people have chosen to snip landlines out of their budgets. About 60 percent of American households have landlines, down from 78 percent four years ago, according to Chetan Sharma, an independent mobile analyst. The carriers say they are trying their best to deal with an unusual disaster. But in the past, they have steadfastly objected to recommendations from regulators that they spend more money on robust emergency equipment, like longer-lasting backup batteries.