WiFi, once brushed off as unreliable by the major wireless carriers, now finds itself playing a crucial role in their growth businesses.

On Friday, AT&T Inc. (T) said that since purchasing WiFi operator WavePort in 2008, the telecommunications giant has signed $200 million worth of contracts to provide local wireless access to retailers such as McDonald's Corp. (MCD). Verizon Wireless and Sprint Nextel Corp. (S) have aggressively pushed small devices that can broadcast portable WiFi hotspots.

It marks a reversal of an attitude once held by the major carriers, which scoffed at the open design and previously opted to deliver their services through their own tightly controlled networks. But by embracing WiFi, they are able ease the congestion on their networks by diverting traffic to this alternative route. WiFi access also gives the carriers new revenue streams, and draws in consumers who are increasingly searching for local wireless hotspots.

"It's a complete shift in attitude," said Dominic Orr, chief executive of Aruba Networks Inc. (ARUN), which supplies WiFi equipment to carriers and businesses, adding that he has seen more of a push to move traffic onto the WiFi infrastructure.

While T-Mobile USA has long embraced WiFi, including offering phones that can handle voice calls run over both the cellular and WiFi networks, AT&T and Verizon have caught up.

Both use WiFi as a retention tool. AT&T offers free access to a network of 23,000 WiFi hotspots in retail stores, airports and hotels to certain wireless and U-Verse subscribers, crucial for iPhone users looking for a speedier wireless connection. Likewise, Verizon offers WiFi to customers who sign up for a higher tier of Internet service.

Free WiFi access, meanwhile, also means a decent profit for AT&T.

"It's meeting our expectations of what it should do," said Dennis Whiteside, assistant vice president for AT&T's WiFi business. He declined to give specific financial figures for the WiFi business.

AT&T's slow-growing business services arm gets a boost, albeit a small one, from its WiFi business. Earlier this month, it signed a deal to provide free local wireless access to more than 1,600 Fedex Corp. (FDX) locations. The deal follows similar arrangements with other retailers such as Starbucks Corp. (SBUX) and Barnes & Noble Inc. (BKS).

WiFi adoption by consumers has never been higher. AT&T said Friday that it created 106.9 million connections on its U.S. WiFi network in the third quarter, exceeding the 85.5 million connections made for all of last year.

As a result, more restaurants and stores are looking to offer WiFi, giving AT&T another service to take to businesses. The company can supply the Internet connection, as well as public and private corporate access, while managing the service for the retailer. AT&T charges a flat monthly rate, which varies depending on the amount of services that are delivered.

That business is highly fragmented, with companies such as privately held Boingo Wireless Inc. offering hotspots at shops, LodgeNet Interactive Corp. (LNET) serving hotels, and International Business Machines Corp. (IBM) providing advice and direction on building larger scale WiFi networks.

Verizon Wireless and Sprint, meanwhile, were late in mandating that all of their smartphones have the option for WiFi. They have gotten more aggressive since then, with both offering MiFi devices that can use their wide-reaching cellular networks to create a small, but portable, WiFi hotspot. Sprint's Overdrive device can tap into the fourth-generation network for a speedier connection. They are able to charge between $20 and $60 a month for the device, depending on data use.

Verizon Chief Financial Officer John Killian told analysts on Friday he expects the WiFi-only version of the Apple Inc. (AAPL) iPad--sold by Verizon Wireless--will drive sales of MiFi devices.

Consumers are interested in WiFi because the networks typically offer a faster connection than the carrier's cellular networks. Other applications, such as Apple's Facetime video chat program, will work only on WiFi.

Getting free access to the Internet on smartphones has also become more important after AT&T introduced capped data plans, which have customers counting the megabytes of information sent to their smartphones through the cellular network. Verizon Wireless, which is jointly owned by Verizon Communications Inc. (VZ) and Vodafone Group PLC (VOD), said it plans to offer next week a cheaper, but limited data plan.

"It's grown from an interesting little technology to a real working everyday tool that is in people's hands," Whiteside said.

-By Roger Cheng, Dow Jones Newswires; 212-416-2153; roger.cheng@dowjones.com

 
 
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