_ The Samsung Impression is the first phone on the U.S. market with a screen that uses organic light-emitting diodes rather than liquid crystals. Since OLEDs emit their own light, rather than filtering a fluorescent backlight like LCDs, they can save on battery life and provide better image quality. The Impression has a 3.2-inch (8.1-centimeter) touch screen capable of showing very saturated colors and dark blacks, and a slide-out QWERTY keyboard. AT&T will sell the phone for $200 starting Tuesday. OLEDs have shown up before in camera displays, and Sony sells a small, expensive OLED TV.
_ AT&T will sell the Nokia E71x, which is billed as the thinnest smart phone in the country, less than half an inch thick. The layout is similar to that of a BlackBerry or BlackJack, and includes a keyboard. Nokia has had a hard time penetrating the U.S. smart phone market, and previous, similar Nokia models sold by AT&T haven't made much of dent on the dominant market share of Research In Motion Ltd.'s BlackBerry. Despite being so thin, the E71x has a 3.2 megapixel camera with autofocus. The phone will cost $100. AT&T has no firm launch date.
_ Sprint Nextel Corp. trotted out the Samsung Instinct s30, a follow-up to the first Instinct, which it introduced last year as a touch-screen competitor to the iPhone. The s30 has a thinner, more rounded body and includes a more fully featured Web browser. The s30 will be available April 19 for $130.
_ Samsung is making a Web tablet for Clearwire Corp.'s wireless broadband network, which uses a technology known as WiMax. There are laptops and modems for the network, which is live in Portland, Oregon, and Baltimore, but there hasn't been a standalone portable device for Clearwire since Nokia discontinued its WiMax tablet in January. Samsung's Mondi will go on sale in the next three months. No price was announced. It doesn't work as a phone, but it could run teleconferencing applications like Skype. The underlying software is Windows Mobile. Naturally, the Mondi has a keyboard and a touch screen, with a 4.3-inch (11-centimeter) diagonal.