The move is part of a planned transition, but it raises some interesting questions about what Sprint might do with the 800MHz spectrum that it will free up by shutting down the old iDEN network. Reports suggest the company already is planning to build an LTE network that would augment its current WiMax-based 4G network.

Verizon Wireless is already selling LTE service in a number of areas, with plans to expand nationwide. AT&T has announced plans to build an LTE network in addition to adding a speedier version of its existing network. T-Mobile has said it hopes to move to LTE eventually as well, though it currently lacks the spectrum to do so.

Sprint had the early lead in next-generation networks by going with WiMax, but many still expect the carrier to ultimately add an LTE network as well, something the company has hinted it may do, but has yet to publicly commit to doing.

Sprint didn’t reference LTE in any way in this week’s announcement, but said it will, in the fourth quarter of this year, start offering push-to-talk devices from Kyocera and Motorola Mobility that run on its CDMA network. Among the initial devices, Sprint said, will be an “ultra-rugged camera flip phone” as well as a touch-screen Android device with a full keyboard. More phones are planned for next year, it said.

The company is pitching its new Sprint Direct Connect network as a more powerful evolution of the push-to-talk network popularized by Nextel. Although Sprint may be able to offer more powerful devices, expanded coverage area and better in-building coverage, it will be a tough shift for some companies that have widely deployed phones and applications customized for the iDEN network.

Sprint said it will work with developers who have built applications specific to the Nextel network to bring them over to the new Direct Connect devices. Sprint also said that the new devices will interoperate with existing push-to-talk devices as well as mobile radios widely used by emergency services personnel and many businesses.

Although it hasn’t publicly outlined LTE plans, Sprint has talked about the ability of its planned network shifts to “enhance its 4G technology options.” Sprint first started outlining its network transition plans back in December, though with less detail and specificity.

The transition will also be costly for Sprint, which has said it expects to spend between $4 billion and $5 billion on the multiyear effort, though over a seven-year period it expects to save between $10 billion and $11 billion through lower energy costs, reduced roaming expenses and other efficiencies.

“We wanted to be first, and WiMax was available” in 2008, Hesse said. “I can’t deny that LTE will be a bigger ecosystem, but we couldn’t wait. We thought the market was ready.”

Also during his talk, Dan Hesse said that during the last two quarters, Sprint has been the fastest-growing post-paid mobile brand in the U.S. and that the company’s overall subscriber numbers have been offset by losses on its older Nextel network. Hesse also said that Sprint-Nextel will begin to wind down operations of the Nextel iDen network and migrate its customers to Sprint in 2013, though not before push-to-talk features are added to Sprint. “All Gs come to an end,” he said.

Under the terms of the deal, Motorola (MOT) will retain its wireless patent portfolio and iDEN assets, while Nokia Siemens acquires all that remains: the company’s GSM (Global System for Mobile Communications), CDMA (Code-Division Multiple Access), WCDMA (Wideband Code-Division Multiple Access), WiMax and LTE (Long-Term Evolution) operations, along with contracts to supply some 50 wireless carriers and cable companies, among them top wireless carriers like Verizon (VZ), Sprint Nextel (S) and KDDI in Japan.

Not a bad deal for Nokia Siemens, which had been struggling to bolster its presence in North America. The company last year bid in two auctions for Nortel Networks’ assets and lost both times, first to Ericsson and then to Ciena.

For Motorola, which has been looking to unload its network infrastructure business for quite some time now, the deal is an important step in its plan to spin off its mobile and cable set-top box divisions into a separate company early next year.

That works out to $24 per share in cash for iPCS. This is a 34 percent premium over the company’s closing price of $17.88 per share on Friday, but perhaps a small price to pay for putting an end to the two iPCS lawsuits–one over Sprint’s acquisition of Virgin Mobile, the other over its investment in Wimax operator Clearwire.

As a result of the iPCS deal, Sprint (S) will no longer be required to divest its iDen network in certain iPCS (IPCS) territories, though iPCS had won a court ruling requiring Sprint to do so. Now, Sprint will not only keep those assets, it can peddle their services to some 700,000 iPCS customers in a territory that covers 81 markets in seven states.

Below, the official announcement:

Sprint Nextel to Acquire Wireless Affiliate iPCS, Inc.

More than 700,000 PCS Wireless Users and 270,000 Wholesale Customers to Become Sprint Direct Subscribers
Extends Company’s Direct Service Territory to an Additional 12.6 Million People
Sprint Ends Plan to Divest iDEN Network Assets in Certain Midwestern States Pending Transaction Close
OVERLAND PARK, Kan. & SCHAUMBURG, Ill.–(BUSINESS WIRE)–Oct. 19, 2009– Sprint Nextel Corp. (NYSE: S) and iPCS, Inc. (NASDAQ: IPCS) today announced an agreement for Sprint Nextel to acquire iPCS for approximately $831 million, including the assumption of $405 million of net debt. This transaction value represents 6.4x projected 2010 Adjusted Earnings Before Income, Taxes, and Depreciation (“Adjusted EBITDA”*). Sprint expects to achieve approximately $30 million of synergies annually in the transaction and expects the transaction to be free cash flow accretive to Sprint in 2010.

Under the terms of the agreement, Sprint Nextel will commence a cash tender offer to acquire all of iPCS’ outstanding common shares for $24.00 per share. This price per share represents a 34 percent premium to iPCS’ closing stock price as of October 16, 2009. The agreement also requires a minimum of a majority of the shares outstanding (on a fully-diluted basis) to be tendered in the offer. Following completion of the tender offer, any remaining shares of iPCS will be acquired in a cash merger at the same price per share. Shareholders with approximately 9.5 percent of the outstanding common shares of iPCS have already agreed to tender their shares pursuant to the tender offer and to vote their shares in favor of the merger.

The acquisition is subject to customary regulatory approvals and other customary closing conditions, and is expected to be completed either late in the fourth quarter of 2009 or early 2010. As part of the agreement, Sprint Nextel and iPCS will seek an immediate stay of all pending litigation between the parties with a final resolution to become effective upon closing of the acquisition.

As a result, Sprint will no longer be required to divest its iDEN network in certain iPCS territories and will terminate its previously announced divestiture process pending closing of the transaction.

iPCS’s services are sold under the Sprint brand name and in Sprint-branded stores. Because of the nearly seamless marketing and sales relationship between Sprint and iPCS, customers should not experience any change in their service as a result of this transaction.

“Acquiring iPCS brings added value to Sprint by expanding our direct customer base, growing our direct coverage area and simplifying our business operations,” said Dan Hesse, CEO of Sprint Nextel. “Customers in iPCS territory will see a seamless transition and continue to enjoy a superb customer experience.”

“We are very pleased to have reached this agreement with Sprint Nextel. Given the increasingly competitive landscape, we believe this is an opportune time to provide our shareholders with a liquidity event at a very attractive price. iPCS shareholders will receive a significant and immediate premium for their shares and our customers will continue to receive the same excellent service from the same dedicated people who provide that service today,” said Timothy M. Yager, president and CEO of iPCS. “We look forward to working with the Sprint Nextel team to ensure a smooth completion of the transaction and transition in the coming months.”

For Sprint, which is suffering from declining revenue and a thinning subscriber base, the move is a quick-and-dirty way of cutting costs and freeing up resources to focus on innovation and remedying the real and perceived issues with its services.

“This is about improving our customer experience,” Steve Elfman, head of Sprint’s network operations, said during a conference call this morning. “While we get the benefit of Ericsson’s expertise…we can focus our attention on bringing great devices, great services, great applications to them….We’ll benefit from the current scale and efficiency and expertise of Ericsson, and this will keep improving over time.”

Apparently, everything but Nextel is on the table.

Or, rather, Nextel is still on the table, but no one’s interested in buying it at the $5 billion+ price Sprint’s asking. Said Chris King, an analyst at Stifel Nicolaus, “I’m not sure they were going to see that kind of valuation, especially in this type of capital markets environment.”

Not the most attractive of acquisition targets. But beauty is in the eye of the beholder, in this case T-Mobile parent Deutsche Telekom (DT) which is reportedly considering a bid for the wireless outfit, whose worsening losses have left it ripe for a buyout. By swallowing Sprint (S), DT could gain some spectrum in the States and stave off a price war between the mobile carriers, or so the “thinking” goes.

Thing is, an acquisition of Sprint entails an acquisition of Sprint’s problems–and there are many. It would also require DT, which operates a GSM/EDGE network, to manage Sprint’s 3G CDMA network and Nextel’s legacy iDEN system. That’s three different network standards. And then there’s Sprint’s WiMax operation, XHOM, to deal with. That’s the makings of a real Greek tragedy of a business story right there. Said Avian Securities analyst Matthew Thornton, “While the differing network technology standard does not necessarily eliminate the possibility of a deal, it does significantly raise the costs and complexity of the combination.”

Michael Nelson, an analyst at Stanford Group, agreed. “You really cannot underestimate the level of complexity that that entails,” he told Bloomberg. “There is a significant amount of integration risk.”

Not the most attractive of acquisition targets. But beauty is in the eye of the beholder, in this case T-Mobile parent Deutsche Telekom (DT) which is reportedly considering a bid for the wireless outfit, whose worsening losses have left it ripe for a buyout. By swallowing Sprint (S), DT could gain some spectrum in the States and stave off a price war between the mobile carriers, or so the “thinking” goes.

Thing is, an acquisition of Sprint entails an acquisition of Sprint’s problems–and there are many. It would also require DT, which operates a GSM/EDGE network, to manage Sprint’s 3G CDMA network and Nextel’s legacy iDEN system. That’s three different network standards. And then there’s Sprint’s WiMax operation, XHOM, to deal with. That’s the makings of a real Greek tragedy of a business story right there. Said Avian Securities analyst Matthew Thornton, “While the differing network technology standard does not necessarily eliminate the possibility of a deal, it does significantly raise the costs and complexity of the combination.”

Michael Nelson, an analyst at Stanford Group, agreed. “You really cannot underestimate the level of complexity that that entails,” he told Bloomberg. “There is a significant amount of integration risk.”