Motorola announced on Facebook today that the Android 2.1 upgrade is now available for Milestone smartphone users to download.
"We hope you enjoy enhancements such Speech to Text, live wallpapers, up to nine home screens, and added security for exchange server users," said the post.
Google has referred to Android 2.1 as a "minor platform release", but the update has proved popular with users and reviewers because of its visual enhancements.
Android 2.1 boasts features such as interactive backgrounds, additional home screens, a sophisticated navigation system and a 3D photo gallery.
The update will benefit Milestone users who also use Twitter, with the microblogging site having just revealed a client for Android phones that is available only for phones running Android 2.1 and above.
Google's mobile operating system is becoming an increasingly popular choice for smartphone users in the UK, according to new figures from research firm GFK Retail and Technology.
The percentage of Android contract sales increased from three per cent to over 12 per cent from mid-March to mid-April, and one in five UK smartphones sold are now Android-based.
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