The HTC EVO 4G uses HTC Sense.
The Android Rosie utility represents the HTC Sense user interface. Sense is a custom interface designed by HTC for use on its smartphones and tablets. It provides the EVO with a layout and features that work in conjunction with the version of Google's Android operating system that the device is running.
Rosie
HTC used the name "Rosie" as the unofficial title of the company's custom smartphone and tablet interface, initially released in 2009. Upon its release on the HTC Hero smartphone, the interface became known as HTC Sense. If you use one of the devices that initially adopted HTC Sense, you may see active utilities in the "Running Services" menu that use the name "Rosie," referring to a component of HTC Sense.
Sense Basics
Google's Android operating system is an open source mobile interface that allows developers to customize it to create a different user experience on each Android device. This allows two different Android smartphones running the same core version of the operating system to appear and function uniquely. HTC Sense does not replace Android, but augments it with features that HTC deems useful. It is native to HTC devices and cannot be removed without going through the rooting process and terminating your warranty.
Scenes
HTC Sense allows you to create different layouts, or scenes, on your smartphone or tablet. A layout can be set to change automatically based on the time of day or simply exist until you choose to activate it. Scenes allow you to save settings for specific purposes, so icons and preferred applications will be readily accessible when you're at work, at home or on the road. For example, a work scene could consist of a more professional home screen wallpaper, with icons for email and office applications moved to a prominent location.
Additional Features
HTC Sense builds on the Android operating system by offering many nuances, such as native social networking support via its Friend Stream application. Friend Stream combines social networks into one interface, with an optional home screen widget. Other features include custom widgets, silencing your ringer by turning the smartphone over and the device recognizing it's in an enclosed area and ringing louder. The interface organizes recent activity around the contact that it's associated with, allowing you to quickly go back and review any interactions.
Tags: operating system, Android operating, Android operating system, Android Rosie, create different