Samsung Gravity TXT

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(Redirected from Samsung SGH-T379)
A Samsung Gravity TXT SGH-T379 with QWERTY keyboard slid out

The Samsung Gravity TXT, also known as the Samsung SGH-T379 is a messaging-oriented feature phone released in the third quarter of 2011 by Samsung, exclusively in the United States by T-Mobile.

The phone has an optical trackpad which sets it apart from the other phones in the Gravity series. It also has a normal 3.5mm headphone jack, something uncommon in other Samsung feature phones from this time. Cosmetically, it's mostly grey with a slightly rubberized back, but the sides and keyboard can come in 2 different colors (orange and cyan).

As with many Samsung GSM phones of this time, it uses the Swift SoC platform.

Specs

Basics

SGH-T379
HW Platform/ChipsetST-Ericsson Swift PNX6710 (312MHz ARM926EJ)
SW Platform/OSSamsung Proprietary
Display 240 x 320, TFT, 16-bit color
LED IndicatorNo
Flash memory256 MB, ~115 MB accessible to user (Samsung K522F1HACC)
RAM128 MB MDDR (Samsung K522F1HACC)
Memory card slotmicroSDHC, max. 32 GB
Charging and data connectorMicro USB
Regulatory infoFCC ID: A3LSGHT379 (approved 2011-07-07)

Connectivity

SGH-T379
Operating modesGSM 850/900/1800/1900, WCDMA 2/4
DataHSPA 7.2
SIM sizeMini SIM
IrDANo
BluetoothYes, v2.1
Bluetooth profilesHSP 1.1, HFP 1.5, OPP, FTP, PBA, A2DP 1.2, AVRC, BPP 1.2, SAP 1.1
PC LinkUSB Mass Storage mode (microSD card required), Samsung PC Studio

Media

SGH-T379
Rear camera2 MP (1600 x 1200), fixed focus side key, face detection, panorama, night mode, spot metering, brightness control
Video recordingQVGA (320 x 240)
Supported image formatsBMP, GIF, JPG, PNG, SVG, TIFF, WBMP
Supported sound formatsAMR, AAC, MID, MP3, WAV, XMF
Supported video formats3GP, MP4 (h263)
Speaker configurationEar speaker, loudspeaker
Line out3.5mm jack
SynthesizerSamsung DSR / "Swift" softsynth (DSR_25)
ExtrasAdobe Flash SWF support, XMF support is not official (play supported file then navigate to XMF file using joystick)

Messaging

SGH-T379
SMSYes
EMS?
MMSYes
IMNone

Software

SGH-T379
JavaMIDP 2.1, CLDC 1.1
Java APIsJSR 82 Bluetooth API
JSR 120 Wireless Messaging API (WMA)
JSR 135 Mobile Media API (MMAPI)
JSR 172 Web Services API
JSR 177 Security and Trust Services API (SATSA)
JSR 179 Location API
JSR 180 SIP API
JSR 184 Mobile 3D Graphics (M3G)
JSR 185 Java Technology for the Wireless Industry (JTWI)
JSR 205 Wireless Messaging API (WMA) 2.0
Flash LiteUp to version 7

Accessories

Batteries

Hidden Features and Assets

Flash support

While Adobe Flash support isn't documented anywhere in the phone's user manual, the phone does have Adobe Flash Lite included, allowing Flash content up to version 7 to run.[1] Flash content can be made full screen in either orientation, and thumbnails are generated on-the-fly in the file browser.

mXMF audio support

Even though many of the phone's system sounds are in the mXMF format, the phone does not 'support' playing them in the media player. When you try to play .mxmf files on an SD card, it will display an "Unsupported File" message. mXMF files can be played with some steps.

To play mXMF files, first play an officially supported file type (like .MID), and then navigate to the .mXMF file using the optical trackpad, selecting either the forward or backward track icons. If the mXMF file is valid, it will start playing.

Do note that mXMFs with particularly large DLS files (>8MB) will crash the phone. zlib-compressed mXMFs have not been tested.

Dial codes

These are codes entered on the dial screen which can open up more hidden features like debug options. Such strings can be found on dumped firmware by searching using a hex editor.

*#0206*377# - Dumps RAM to UART (does not work on retail phones)

*#0*# - LCD Test

*#6984125*# - Admin Setting (*#9072641*# for master key, *#73561*# for operator key)

*#33284*# - Debug Level Menu

*#197328640# - Service Menu

Gallery

Phone Graphics

Phone Photos

PCB Scans

Firmware

One unencrypted firmware is currently available, which is version T379UVKF9. This appears to be the only firmware version ever released for the phone.

References