Samsung Galaxy S2 was released in April 2011, and by then it was definitely surpassed by stronger devices such as the Galaxy S3, Samsung Note, Note 2 and others. Still, it remains an important device in the Android community. If you want to learn more about it you can read all the information below. You can also suggest something to use by posting in the comment section.The most important specifications of Galaxy S2 are:
  • Samsung Exynos Dual-core 1.2 GHz Cortex-A9 Chipset
  • 4.3" WVGA 480x800 SAMOLED+ Display Screen
  • 8.0 MP LED flash Camera & 2 MP secondary camera
  • [email protected] Video
  • 1650 mAH Battery
  • 16GB/32GB storage, 1 GB RAM
  • GPS, Bluetooth 3.0, Expandable memory (SD)
The Galaxy S2 comes in more than one variant. There might be some differences between each variant regarding the processor speed. Here is a detailed list with the variants spread worldwide:
  • I9100: This is the UK version (1.2 GHz)
  • I9103: 1 GHz
  • I9100G: This is the International version (1.2 GHz)
  • SGH-T989: This is the T-Mobile USA version (1.5 GHz)
  • SGH -I777: This is the AT&T USA version (1.2 GHz)
If you want to find out your own Galaxy S2 Model Number you can go to Settings>About>Model Number
If you want to find out the Product Code of your Galaxy S2 then dial *2767*4387264636# on the keypad. This can be useful if you want to manual update your phone using Kies, or for other installations.
How to put Galaxy S2 into Recovery Mode:
  1. With the phone turned off, simultaneously press Volume Up + Home + Power buttons
  2. Wait for the Samsung Logo to appear. When it does, release the buttons fast for a split second and repress them once more.
  3. The menu in Recovery Mode is accessed using the Volume keys.
How to put Galaxy S2 in Download Mode:
  1. First activate USB Debugging by going to Settings>Applications>Development>USB Debugging
  2. With the device turned off press Power + Volume Down + Home Buttons simultaneously and release when it enters Download Mode
Rooting is a procedure that gives applications on your device "root", elevated permission. This is a procedure that usually enhances more advanced users, not newbies or regular users. Usually rooting is needed to install a Custom ROM.
How to root Samsung Galaxy S2 :
  1. How to root Samsung Galaxy S2 GT-I9100 GUIDE (Running Android 4.0.4 XWLPO and XXLQ5). To find out what version of Android you have dial *#1234# on your keypad
  2. How to root Samsung Galaxy S2 running STOCK ICS - Simple Method:
  • Download ClockworkMod Recovery &
  • Put the downloaded files on your SD card
  • Reboot the phone in Recovery Mode (You have the guide above)
  • Scroll to <apply update from external storage>
  • Select and wait until you are prompted with ClockworkMod Recovery
  • Select <install zip from sdcard>
  • Select and install it
  • After you reboot you should have  completely rooted your Galaxy S2 device
  • IF YOU WANT TO UNROOT your Galaxy S2 device after performing this root, download and follow the exact same steps as above.
  • Unrooting can be useful if you want to recover warranty or if you want to flash a stock ROM etc.

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What's my model number?

There are several ways to locate your model number:

Option 1
On your device, go to Settings, then "About device" and scroll down to "Model number"
Option 2
Often times you can view the model number inside the device, by removing the battery
Option 3
Using Samsung's model/serial number location tool

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