While AOL offers its services and instant messaging to several mobile carriers and PDA platforms, it's only company-led foray into wireless Internet is through its Mobile Communicator product: a Research in Motion (nasdaq: RIMM - news - people ) Blackberry, running on Cingular Wireless ' network, that has e-mail and instant messenger.

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But despite these hurdles, the researchers are confident that the system can work and could be used on devices like mobile phones or PDA's and for different content.

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It looks like Microvision tends to favor the diminutive kind, however, as the company is looking to showcase its "ultrathin, miniature full-color projection display" at next week's CES. Hoping to cram this bad boy into your next mobile phone, PDA, or other handheld gizmo, the firm is touting its incredibly small form factor as the next coming of mobile displays.

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Here's a little background on Just Mobile: the company started off as a PDA (mainly Windows Mobile) accessory OEM in around 2005, with Huang taking care of procurement plus manufacturing, and his talkative friend Gustafsson, an ex-banker, overlooking European sales.

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From the beginning of Microsoft's mobile efforts in the PDA era, its touchscreen phone software has had a Start button and windows that could be minimized like the classic Windows desktop.

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INSPI2 augments a Web site and client application that is still in use on laptops and PDA-type Windows Mobile devices.

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That's what appears to be happening in the mobile-phone business, as companies combine phones with personal digital assistants (PDA).

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Though so far it has stayed away from the PDA-combo product class--it's leaving that to its mobile phone joint venture with Ericsson (nasda: ERICY - news - people )--Sony is playing the percentages by producing PDAs that will appeal across a pretty wide spectrum.

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