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IDG News Service - Google's emerging Chrome operating system won't squeeze out Android, according to Andy Rubin, the company's vice president of mobile engineering platforms.

Mobile device OSes have specialized jobs that other platforms don't, such as running network protocol stacks, carefully managing battery life and handling handoffs among cell towers, Rubin said.

"There's different problems to be solved in different categories of consumer products," Rubin said. "But that doesn't mean that ... one wins and one doesn't win. You need different technologies for different solutions."

Speaking at an event in San Francisco where Google and T-Mobile USA showed off the new MyTouch Android-based handset, Rubin said Google would use the Android Marketplace as a "carrot" to prevent fragmentation of the OS. He also said Google Checkout is just the first of what should be a wide range of payment platforms for the Marketplace.

T-Mobile introduced the MyTouch, a touch-screen device from HTC priced at $199 with a two-year contract, on Wednesday. It's the second Android-based phone from the carrier. Though other mobile operators have expressed interest in selling their own Android products, T-Mobile aims to keep its dominance, according to Cole Brodman, T-Mobile's chief technology officer and senior vice president for technology.

"We want to go deeper with Android, faster than anybody else will, and further than anybody else will. We'll push it to uncomfortable limits that other carriers won't follow," Brodman said. T-Mobile makes a subscriber's personal and contact information portable across Android phone models and will offer applications for use on all of them, he said.

Two Android application developers who appeared at the event said they chose the platform for its openness. Geodelic Systems' Sherpa is a location-based application that provides information about a user's surroundings and fine-tunes its tips by learning the user's preferences over time. Android lets it interact with other applications on the phone, such as an ordering application used by a coffee shop, Geodelic founder Rahul Sonnad said.

Voice Text, which IT professional Alex Byrnes developed on his spare time, can convert spoken words into text messages or other written entries for various Android applications. Using the open platform, Byrnes is happy not to be tied to the fate of a particular company.

"If Google and T-Mobile shut down tomorrow, Android would go on," Byrnes said.

Sherpa is free, and Voice Text costs $1.25. One limitation of Android is that applications such as Voice Text can only be purchased with Google Checkout. Byrnes said he hasn't heard any complaints from people who wanted to use a different payment method.

Google Checkout became the payment system because it was easy for the development team to add on, Google's Rubin said. Google now plans to provide APIs (application programming interfaces) for attaching different payment platforms that are appropriate to carriers in various parts of the world, he said.