The T-Mobile Pulse (Huawei U8220)(sold as the CHT8000 in Taiwan) is an Android-powered phone manufactured by

Huawei Huawei Technologies Co., Ltd. ( ; ) is a Chinese multinational technology corporation headquartered in Shenzhen, Guangdong, China. It designs, develops, produces and sells telecommunications equipment, consumer electronics and various smar ...

and rebranded by T-Mobile. It is available in many markets including the UK and The Netherlands. Compared to many Android phones released at the time it was relatively low cost - originally selling for £185 in the UK, the Pulse achieved a minimum price of £19.99 + £10 top up on PAYG before being discontinued in April 2011. This made it one of the cheapest Android powered smartphones available at the time. The Pulse was also marketed as being the first Pay As You Go phone running the Android OS.

Technical specifications

* Operating system Android, officially 2.1, can be upgraded to custom 2.2 ROMS * Power 4.2 V 1150 mAh (4.3 Wh) Internal rechargeable removable lithium-ion battery * CPU 768 MHz

ARM In human anatomy, the arm refers to the upper limb in common usage, although academically the term specifically means the upper arm between the glenohumeral joint (shoulder joint) and the elbow joint. The distal part of the upper limb between th ...

v6-capable processor, Underclocked to 528 MHz * Storage capacity Flash memory: 256MB with microSD slot supporting up to 16 GB * Memory 192 MB DDR SDRAM (Some models have 256 MB) * Display 320 x 480 px, 3.5 in (89 mm), HVGA, transflective TFT * Input "Capacitive" touchscreen display without multi-touch feature, on-screen QWERTY keyboard, volume controls, 3-axis accelerometer, 4 front-facing physical buttons * Camera 3.2

megapixel In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a raster image, or the smallest point in an all points addressable display device. In most digital display devices, pixels are the sm ...

CMOS Sensor with

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(Rear-Facing Camera). * Sensors

A-GPS Assisted GNSS (A-GNSS) is a GNSS augmentation system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a global navigation satellite system (GNSS). A-GNSS works by providing the necessary data to the ...

, 3-axis

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, Magnetometer (Compass), Battery

Temperature Sensor Mechanical temperature sensors * Thermometer * Therm Electrical temperature sensors * Thermistor- Thermistors are thermally sensitive resistors whose prime function is to exhibit a large, predictable and precise change in electrical resistance wh ...

* Connectivity

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(3G) or

GSM The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such ...

(2G) telephony network, Wi-Fi (802.11b/g), Bluetooth 2.0+EDR,

Micro USB The initial versions of the USB standard specified connectors that were easy to use and that would have acceptable life spans; revisions of the standard added smaller connectors useful for compact portable devices. Higher-speed development of t ...

* Dimensions 116 mm (4.6 in) (h); 62.5 mm (2.46 in) (w); 13.6 mm (0.54 in) (d) * Weight 135 g (4.8 oz)

Firmware / ROMs

The Pulse was originally released with Android 1.5 heavily customized and branded by T-Mobile. It came with its own Home screen app, as well as various non-stock applications, including

Documents To Go Documents To Go is BlackBerry's cross-platform office suite for Palm OS, Windows Mobile, Maemo, BlackBerry OS, Symbian, Android, and iOS. Also, a larger-screen version would have been included with the Palm Foleo, but Palm, Inc. cancelled the de ...

and RoadSync from DataViz.

Official firmware

Official firmware from the manufacturer, have been independently released by * T-Mobile Hungary * T-Mobile Sweden * T-Mobile UK As of June 2010, T-Mobile has provided some firmware releases for the Pulse: * November 2009 Open Source Code released * November 2009 Pulse firmware download * December 2009 Increased stability; Improved audio * May 2010 2.1 available in Hungary as an update * August 2010 2.1 available in the UK as an update (T-Mobile has since removed this update from their site for further bug testing due to a SMS issue.) * September 2010 2.1 Source Code released * February 2011 2.1 available in the UK as an update (...B836... compared to ...B826... in Aug 2010, including the SMS fix)

Unofficial firmware

It is possible to

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the Pulse, using software developed by the Android community. A custom recovery image is also installable. Several custom ROMs have been created adding various features, including EXT2/3/4 file system support and Busybox pre-installation. The firmware from the Huawei u8230 has been ported to the Pulse to remove the T-Mobile branding, as well as other changes. On 12 May, 2.1 was released on the Modaco Forums. On 8 October, Tom G from the Modaco Forums ported a 2.2 beta of CyanogenMod 6. Latest available version is CM6.1RC2 0.40 Beta. The highest supported

CyanogenMod CyanogenMod ( ; CM) is a discontinued open-source operating system for mobile devices, based on the Android mobile platform. It was developed as free and open-source software based on the official releases of Android by Google, with added origi ...

version is 7; it is based on Android 2.3.7.

References

External links