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

Huawei Huawei Technologies Co., Ltd. ("Huawei" sometimes stylized as "HUAWEI"; ; zh, c=华为, p= ) is a Chinese multinational corporationtechnology company in Longgang, Shenzhen, Longgang, Shenzhen, Guangdong. Its main product lines include teleco ...

and rebranded by

T-Mobile T-Mobile is the brand of telecommunications by Deutsche Telekom Deutsche Telekom AG (, ; often just Telekom, DTAG or DT; stylised as ·T·) is a partially state-owned German telecommunications company headquartered in Bonn and the largest telec ...

. 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 1.5, can be upgraded to 2.2 via Custom 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 ...

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 graphics, raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, p ...

CMOS Sensor with

auto focus An autofocus (AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical system has ...

(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

Accelerometer An accelerometer is a device that measures the proper acceleration of an object. Proper acceleration is the acceleration (the rate of change (mathematics), rate of change of velocity) of the object relative to an observer who is in free fall (tha ...

, Magnetometer (Compass), Battery

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

* Connectivity

WCDMA The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. UMTS uses wideband code-division multiple access (W- CDMA) radio access technology to offer greater spectral efficienc ...

(3G) or

GSM The Global System for Mobile Communications (GSM) is a family of standards to describe the protocols for second-generation (2G) digital cellular networks, as used by mobile devices such as mobile phones and Mobile broadband modem, mobile broadba ...

(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 high life spans; revisions of the standard added smaller connectors useful for compact portable devices. Higher-speed development of the USB ...

* 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 d ...

and RoadSync from

DataViz DataViz, Inc. is a software company located in Westport, Connecticut. They currently sell Docs To Go and DailyBalance. The company has been in business since 1984 formerly selling apps such as Passwords Plus, MacLinkPlus, RoadSync, and Conver ...

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

root In vascular plants, the roots are the plant organ, organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster. They are most often bel ...

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. Developed between 2009 and 2016, it was free and open-source software based on the official releases of Android by Goog ...

version is 7; it is based on Android 2.3.7.

References

External links