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Samsung Galaxy S II/SGH-T989

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T-Mobile Samsung Galaxy S II
T-Mobile Samsung Galaxy S II.jpg
Model Number: SGH-T989
Manufacturer: Samsung Samsung-icon.png
Release Date: 10/2011
Operating System: Android Android-icon.jpg
Dimensions: 129.8 x 68.8z x 9.4 mm
Weight: 135 g
Chipset: Qualcomm APQ8060 Snapdragon
Display: 4.52" WVGA 480x800 Super AMOLED™ Plus
Networks: 2G GSM/GPRS/EDGE 850, 900, 1800, 1900 MHz

3G UMTS/HSPA+ (21 Mbps down, 5.76 Mbps up) 850, 1700 (AWS/Band IV), 1900, 2100 MHz

Wifi: 802.11 a/b/g/n 2.4 & 5 GHz, Wi-Fi Direct, Wi-Fi hotspot
Bluetooth: 3.0 (w/ A2DP, HS)
NFC: Yes (Android Beam support for 4.x, S Beam support for 4.1.x)
GPS: Yes
Video out: microUSB v2.0 (MHL)
Camera: 8.0 MP with LED Flash
Secondary Camera: 2.0 MP
Internal Memory: 16GB
Memory Card: Up to microSDXC 64GB
Battery: 1850 mAh (min. 1500 mAh)
Additional Features: Samsung TouchWiz 4.0 / TouchWiz UX


The T-Mobile Samsung Galaxy S II is one of the phones to follow up to Samsung's widely successful Galaxy S lineup. This time, the Galaxy S2 raises all the stakes and Samsung has found a way to double almost every spec in a true, one of a kind sequel.

With a 4.52-inch Super AMOLED™ Plus screen, 1.5GHz dual-core Snapdragon processor, 8MP rear camera/ 2MP front-facing camera, both 1080p recording and playback, NFC capabilities, great battery life and one of the thinnest phones on the globe, the T-Mobile Samsung Galaxy S II is a welcome update to the Galaxy family. Superphones don't get much better than this.

This phone was offered by T-Mobile as the Samsung Galaxy S II. Its model number is SGH-T989. Its code name is Hercules.

Getting started

There is a lot to know about the T-Mobile Galaxy S II/SGH-T989. This wiki covers almost everything you might want to know and more.

XDA-Developers Forums for the T-Mobile Samsung Galaxy S II

/* Please be sure you're posting in the correct forum! */

Tutorials and Guides


For a list of available ROMs checkout the database below. ROM Developers: If your ROM is not listed, add it.

T-Mobile Samsung Galaxy S II ROM Database

T-Mobile Samsung Galaxy S II Developer/Custom ROM Database (Forum)


If you're not happy with the looks of the software you are running then you might want to checkout the theme database. Make sure the theme you choose is compatible with your software version. If you're not sure, ask your developer.

T-Mobile Samsung Galaxy S II Themes Database


Kernels are the middle man between your devices software and hardware. Kernels are specific for some builds. If you use an AOSP ROM, you need an AOSP kernel. If you use TouchWiz then you need a TouchWiz kernel. With Samsung phones, the kernel also includes recovery. Not all kernels (or ROMs) have a custom recovery and therefore once they are flashed, you may lose the ability to flash or restore a ROM until a kernel with a custom recovery is flashed via ODIN or Heimdall. You may find a list of kernels for the Galaxy S II Touch in this database.

T-Mobile Samsung Galaxy S II Kernel Database


Modems are used to communicate with carrier towers. This is a database with a collection of all the Galaxy S II Touch Modems to date.

T-Mobile Samsung Galaxy S II Modem Database


Odin is a software program used to flash your Samsung Galaxy S II. Primarily, this is how one achieves root, however it is a great tool to use whether you're just flashing ROMs or restoring back to stock. ODIN is only compatible with a PC running Windows OS.

Download Odin


Heimdall is a cross-platform open-source tool suite used to flash firmware (aka ROMs) onto Samsung Galaxy S devices. It runs on Linux, OS X and Windows (XP, Vista, 7 etc.). It is an alternative to the proprietary closed-source tool ODIN which only runs on Windows OS.

Download Heimdall

Samsung Galaxy S II Series Overview