Acer plans to launch as many as six new smartphones with Android mobile operating system in the first half of next year.

Acer started rolling out its first Android handset this week, the Liquid smartphone. The smarphone device went on sale via Hong Kong operator CSL on Wednesday and at Far EasTone Telecommunications of Taiwan today.

Acer plans to unveil Android mobile phones for three price levels, top-end, mid and low-end, as well as models aimed at business users and consumers, he said. The executive declined to say when Acer's second Android mobile phone will be available.

Liquid, a 3.5-inch touchscreen smartphone with a Qualcomm 8250 Snapdragon chipset inside, was announced earlier this year. The device uses version 1.6 of Android, comes with a built-in GPS receiver for location services and a 5-megapixel camera.

The smartphone will be offered by mobile operators in Europe by the first quarter of 2010 and will continue to roll out around the world, Yuen said. Currently, it is only available through operators in Asia..

With the launch of Liquid, Acer also introduced new Android apps. Spinlets, a streaming music and video service, ships on the device. The app will allow users to listen to streaming music and watch videos free. Acer is working with music companies to sign them onto the service, a representative said.

Another Android app ready for Liquid is an app to create an avatar for users to dress and use on their smartphones. Acer plans to continue developing Android apps to promote its handsets.