Samsung Gravity TXT
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 | |
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HW Platform/Chipset | ST-Ericsson Swift PNX6710 (312MHz ARM926EJ) |
SW Platform/OS | Samsung Proprietary |
Display | 240 x 320, TFT, 16-bit color |
LED Indicator | No |
Flash memory | 256 MB, ~115 MB accessible to user (Samsung K522F1HACC) |
RAM | 128 MB MDDR (Samsung K522F1HACC) |
Memory card slot | microSDHC, max. 32 GB |
Charging and data connector | Micro USB |
Regulatory info | FCC ID: A3LSGHT379 (approved 2011-07-07) |
Connectivity
SGH-T379 | |
---|---|
Operating modes | GSM 850/900/1800/1900, WCDMA 2/4 |
Data | HSPA 7.2 |
SIM size | Mini SIM |
IrDA | No |
Bluetooth | Yes, v2.1 |
Bluetooth profiles | HSP 1.1, HFP 1.5, OPP, FTP, PBA, A2DP 1.2, AVRC, BPP 1.2, SAP 1.1 |
PC Link | USB Mass Storage mode (microSD card required), Samsung PC Studio |
Media
SGH-T379 | |
---|---|
Rear camera | 2 MP (1600 x 1200), fixed focus side key, face detection, panorama, night mode, spot metering, brightness control |
Video recording | QVGA (320 x 240) |
Supported image formats | BMP, GIF, JPG, PNG, SVG, TIFF, WBMP |
Supported sound formats | AMR, AAC, MID, MP3, WAV, XMF |
Supported video formats | 3GP, MP4 (h263) |
Speaker configuration | Ear speaker, loudspeaker |
Line out | 3.5mm jack |
Synthesizer | Samsung DSR / "Swift" softsynth (DSR_25) |
Extras | Adobe Flash SWF support, XMF support is not official (play supported file then navigate to XMF file using joystick) |
Messaging
SGH-T379 | |
---|---|
SMS | Yes |
EMS | ? |
MMS | Yes |
IM | None |
Software
SGH-T379 | |
---|---|
Java | MIDP 2.1, CLDC 1.1 |
Java APIs | JSR 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 Lite | Up to version 7 |
Accessories
Batteries
- Samsung EB42455VA (3.7 V, 1000 mAh Li-ion)
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
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Splash screen
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Boot animation
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Shutdown animation
Phone Photos
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Back side, showing wordmark and rubberized back cover
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Portrait mode with QWERTY keypad hidden
PCB Scans
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Front side of phone PCB
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Back side of phone PCB
Firmware
One unencrypted firmware is currently available, which is version T379UVKF9. This appears to be the only firmware version ever released for the phone.
- 📄 Firmwares/Samsung/SGH-T379 (Gravity TXT)/T379UVKF9.7z MEGAROMphonix.orgfiles.dog