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The HTC Evo 4G (trademarked in capitals as EVO 4G) is a smartphone developed by HTC Corporation and marketed as Sprint's flagship Android smartphone, running on its WiMAX network. The smartphone launched on June 4, 2010 Development.During development, the device was known as the HTC "Supersonic", which was leaked throughout the internet and was already known as a variant of the HTC HD2 running Android.
The EVO was released on June 4, 2010 in the United States through Sprint.[8] The device became the top-selling launch day phone on Sprint, surpassing the Palm Pre, Samsung Instinct and Motorola Razr V3.The HTC EVO features hardware very similar to the HTC HD2, a smartphone running Windows Mobile. The device is sometimes referenced as the Android version of the HTC HD2 although a variety of features are only available on the EVO 4G (video calling for example).Screen and inputUnlike many other smart-phones in the consumer market, the EVO has a large 4.3-inches (480-by-800) TFT LCD capacitive touch screen display with a pixel density of 216 pixels per inch (ppi). The display is designed to be used with a bare finger or multiple fingers at one time for multi-touch sensing. Most gloves and styli prevent the necessary electric conductivity needed for use on the capacitive display.
The EVO has a balanced hardware-software user interface, featuring seven hardware/touch sensitive buttons, four of which are on the front of the device. Input and interaction with the device is balanced between the hardware and software user interface and in most situations require users to use hardware/touch sensitive buttons often throughout Android OS. Like most Android devices, the EVO features four main touch-sensitive buttons on the front of its device which are the Home, Menu, Back, and Search. The Home button returns to the Sense Home screen. The Menu button shows menu options in various applications although it can also be used for other purposes, the Back button is used to return to the prior page or screen displayed, and the Search button mainly allows searching through the phone but can be used for other purposes in various applications. Unlike most smart-phones though, the device does not feature a hardware ringer switch. Situated on the left spine are the volume adjustment controls which controls the volume. A multifunction sleep/wake button is located on the top of the device which serves as the unit's power and sleep button and also controls phone calls. The touchscreen furnishes the remainder of the user interface.
The device responds to four sensors. A proximity sensor deactivates the display and touchscreen when the device is brought near the face during a call. This is done to save battery power and to prevent inadvertent inputs via users' faces and ears. An ambient light sensor adjusts the display brightness which in turn saves battery power. A 3-axis accelerometer senses the orientation of the phone and changes the screen accordingly, allowing users to easily switch between page orientation modes. A geomagnetism sensor provides orientation with respect to Earth's magnetic field. The proximity sensor and the accelerometer can also be used to control and/or interact with third party apps, notably games. The device also contains a temperature sensor used for monitoring the temperature of the battery.
The device also features a GPS chip, allowing applications (with user permission) to report device location allowing for location-based services and can also be useful to turn-by-turn navigation apps.The EVO is powered by the Qualcomm QSD8650 chipset which contains a Snapdragon Scorpion microprocessor clocked at 1 GHz and an embedded Adreno 200 graphics chip capable of up to 22 million triangles per second.
It features 512MB of eDRAM which allows for a smoother experience with Android OS, applications, and the HTC Sense user interface. The device also features 1024MB of built-in ROM which is mainly used for the system software.
The EVO was released on June 4, 2010 in the United States through Sprint.[8] The device became the top-selling launch day phone on Sprint, surpassing the Palm Pre, Samsung Instinct and Motorola Razr V3.The HTC EVO features hardware very similar to the HTC HD2, a smartphone running Windows Mobile. The device is sometimes referenced as the Android version of the HTC HD2 although a variety of features are only available on the EVO 4G (video calling for example).Screen and inputUnlike many other smart-phones in the consumer market, the EVO has a large 4.3-inches (480-by-800) TFT LCD capacitive touch screen display with a pixel density of 216 pixels per inch (ppi). The display is designed to be used with a bare finger or multiple fingers at one time for multi-touch sensing. Most gloves and styli prevent the necessary electric conductivity needed for use on the capacitive display.
The EVO has a balanced hardware-software user interface, featuring seven hardware/touch sensitive buttons, four of which are on the front of the device. Input and interaction with the device is balanced between the hardware and software user interface and in most situations require users to use hardware/touch sensitive buttons often throughout Android OS. Like most Android devices, the EVO features four main touch-sensitive buttons on the front of its device which are the Home, Menu, Back, and Search. The Home button returns to the Sense Home screen. The Menu button shows menu options in various applications although it can also be used for other purposes, the Back button is used to return to the prior page or screen displayed, and the Search button mainly allows searching through the phone but can be used for other purposes in various applications. Unlike most smart-phones though, the device does not feature a hardware ringer switch. Situated on the left spine are the volume adjustment controls which controls the volume. A multifunction sleep/wake button is located on the top of the device which serves as the unit's power and sleep button and also controls phone calls. The touchscreen furnishes the remainder of the user interface.
The device responds to four sensors. A proximity sensor deactivates the display and touchscreen when the device is brought near the face during a call. This is done to save battery power and to prevent inadvertent inputs via users' faces and ears. An ambient light sensor adjusts the display brightness which in turn saves battery power. A 3-axis accelerometer senses the orientation of the phone and changes the screen accordingly, allowing users to easily switch between page orientation modes. A geomagnetism sensor provides orientation with respect to Earth's magnetic field. The proximity sensor and the accelerometer can also be used to control and/or interact with third party apps, notably games. The device also contains a temperature sensor used for monitoring the temperature of the battery.
The device also features a GPS chip, allowing applications (with user permission) to report device location allowing for location-based services and can also be useful to turn-by-turn navigation apps.The EVO is powered by the Qualcomm QSD8650 chipset which contains a Snapdragon Scorpion microprocessor clocked at 1 GHz and an embedded Adreno 200 graphics chip capable of up to 22 million triangles per second.
It features 512MB of eDRAM which allows for a smoother experience with Android OS, applications, and the HTC Sense user interface. The device also features 1024MB of built-in ROM which is mainly used for the system software.
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