HTC has started rolling out the latest version of Android, 'Jelly Bean' 4.1, to its flagship One X handset.
The rollout began at the end of last week, days after operators started upgrading Samsung's Galaxy S III to Jelly Bean and shortly before HTC releases a souped-up version of the One X, the One X+.
The biggest change in Jelly Bean, compared with earlier versions of Android, is the addition of Google Now, a virtual personal assistant that is in some ways comparable with Apple's Siri.
However, the One X update also brings a new version of HTC Sense, the skin that the manufacturer uses on top of Android.
Sense 4+ offers speed enhancements and a unified video hub, as well as a secure inbox for text messages.