HTC have warned users that HTCSense.com was undergoing some pretty big changes, and part of these changes is a major upgrade, which will put all precious services in shut down mode. This means all calendars, call histories, contacts, Footprints travel info, as well as messages, will all be wiped.

Users have until April 30th to do something about it - so we would recommend a very strong word here for anyone using HTCSense.com - back. up. now.

Those who want phone finding and cloud-based backup apps have been told to try third-party apps, as HTC don't have any time frame on when the HTCSense site would boast its new services. Why the sudden change and removal of a website they pushed as competition to Google's cloud services for Android, or Apple's MobileMe service?

Well, HTC are launching Sense 4.0-powered devices in the coming months, with the One X, One S and One V being released into the wild. These handsets have been considerably stripped back and polished, removing clutter and should improve the overall experience of these handsets. This speed increase and spring cleaning does come at a price though, HTCSense being dropped for a while.