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Since its 2007 launch, the iPhone has been available in the U.S. only to subscribers of AT&T Inc., which uses a cellular network technology called GSM.

The Wall Street Journal reported late Monday that Apple plans to release an iPhone this year that would work on CDMA networks — a technology used by latitude d610 battery Verizon Wireless and Sprint Nextel Inc. in the U.S., as well as some carriers overseas.Apple and Verizon declined to comment on the matter. AT&T spokesman Mark Siegel said the iPhone will be an important device for the company for quite some time.

Brian Marshall, an analyst for Broadpoint AmTech, estimates AT&T pays Apple $450 per iPhone, more than the $300 he estimates all other carriers pay per device.But having more than one U.S. iPhone carrier can only help Apple, Marshall said. In the U.K., Canada, Brazil and France, the most recent markets to switch from a single iPhone carrier to multiple Dell latitude d830 battery , unit sales took off when customers on more carriers could choose the phone.

Morgan Keegan analyst Tavis McCourt cautioned that it’s not certain that Apple and Verizon could agree on terms for an iPhone that runs on CDMA networks. CDMA capability could also be used to get the iPhone onto the networks of China Telecom Ltd. and South Korea’s SK Telecom of Dell inspiron 1720 battery .Several analysts said it appears AT&T will still be the only iPhone carrier in the U.S. at least through 2010.

Marshall believes Apple extended the deal until 2011 in exchange for a flexible data plan for the iPad, Apple’s new tablet device. People who buy iPads with cellular data connections can pay AT&T month by month for service, instead of having to sign a contract, and choose a $15 or $30 monthly plan based on data consumption.

Apple shares rose as high as $237.48 on Tuesday, an all-time peak, before pulling back to $235.85, a 1.5 percent gain for the day. Apple’s stock has jumped about 13 percent this month in anticipation of the iPad launch, which begins Saturday.Shares of Verizon Communications Inc., which owns a majority of Verizon Wireless, rose 2.6 percent Tuesday, while the stock of its partner Dell latitude d630 battery , Vodafone Group PLC, edged up 0.8 percent.

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Apple is said to be developing a CDMA-compatible iPhone that would work on leading U.S. mobile carrier Verizon Communications Inc’s network, the Wall Street Journal had reported earlier, citing people familiar with the matter.

The Taiwan firm, Pegatron, will begin shipping the phones from next year, said the source close to Pegatron, who declined to be named as the plans were not yet public. The source could not confirm if the products Dell latitude d420 battery would be for Verizon’s network. Shares in Asustek rose 0.4 percent on Tuesday in a broader Taiwan market up 0.2 percent. Asustek has said it will spin off Pegatron in June, with the unit expected to list around then.

Verizon shares had jumped 3.4 percent in after-hours trade, while AT&T Inc, the current exclusive carrier of the iPhone in the United States, fell 2.2 percent.An Apple spokeswoman said the company does not comment on speculation of Dell inspiron 5100 battery . Broadpoint Amtech analyst Brian Marshall said it was “only a matter of time” before the iPhone landed with Verizon.

He said Verizon has a better network than AT&T and a larger customer base. Marshall expects a Verizon iPhone to happen early in 2011. Verizon has roughly 6 million more wireless customers than AT&T.

Rumors have swirled for some time about Apple launching an iPhone with Verizon. AT&T has been the sole U.S. carrier since the iPhone’s debut in 2007 and some iPhone users have complained about the quality of the AT&T network for Dell inspiron 6400 battery .”AT&T has known all along that its exclusive relationship with Apple would change into something else some day.

From the beginning of its relationship with Apple, AT&T has factored this change into its business and technology planning,” a person familiar with AT&T said. Verizon shares rose to $31.50 from a close of $30.45, while AT&T shares slipped to $25.97 from a close of $26.51 for Dell inspiron e1405 battery . Apple stock rose 2.3 percent to $237.65 in extended trading from a close of $232.39.

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