Mobilize 09 Android has won another convert.

The boutique mobile handset manufacturer INQ announced that it's now developing on Android, Google's open source mobile stack. INQ chief executive Frank Meehan said his mystery Googlephones would "definitely" arrive sometime in 2010, but at this point, the devices seem to consist of little more than, well, an announcement at a tech conference.

"We want developers to know that if they have cool ideas for integrating applications into phones, they should come to us," Meehan told The Reg.

INQ is the outfit behind the so-called Facebook Phone, the INQ1, designed to tightly integrate with the Zuckerbergian social networking site and other web services, including Skype and Windows Live Messenger. And last month, the outfit introduced a pair of inevitable Twitter Phones: the INQ Chat 3G and the Mini 3G.

All are ultra low-cost, Brew-based devices. To date, Meehan says, the company has sold about 700,000 of these "feature phones." But with Android, INQ ends to enter the high-end market.

It was an Android-happy day at Mobilize 09. This morning, Motorola unveiled its long-awaited Android phone, the Motorola Cliq, a device that takes a page or two from the social networking-obsessed INQ. Motorola's custom-built Motoblur interface is also meant for the Tweetbook set. ®