How to Root the Samsung Galaxy Express (AT&T)

Rooting is the process of gaining administrative rights on your Android device.  Once we root our Android device, we can then make changes to it to customize it well beyond what it normally can do.

Once you have root access on your AT&T Samsung Galaxy Express, you’ll be able to:

  • Remove apps that were preinstalled by your carrier/manufacturer from your device.
  • Free up storage space (because of the above benefit).
  • Increase battery life (apps that might have been running constantly can be removed).
  • Increase performance (after removing apps that are always running, the device will be less bogged down and run smoother).
  • Update to a new version of Android (by flashing a custom recovery/ROM, see the end of this procedure for more info on that).
  • Tons of other customizations when you use your new found administrative rights to flash a custom ROM (again, see the end of this procedure for more info on that).

Interested? Here’s how to root your Galaxy Express (SGH-I437):

I.  Before You Begin

1.  Back up everything you feel is important.

2.  Charge your device to 75% or more before you begin.

II.  Necessary Downloads [or the latest version available]

III.  Rooting the AT&T Galaxy Express

1.  Extract to a folder on your desktop.

2.  Enable USB Debugging on your device.  To do this, go to Settings > Developer options and tick the USB Debugging checkbox.  If you don’t find Developer options listed in Settings, go to Settings > About phone and keep tapping on the build number until you see the message ‘you are now a developer.’  You should now find Developer options listed under Settings.

3.  Connect your device to your PC.  If your PC installs drivers at this stage, let it do so and then continue with the procedure.

4.  From the extracted folder, double-click on Impactor.exe.

5.  Choose # drop SuperSU su to /system/xbin/su from the drop-down menu.

6.  Click on Start in the Cydia Compactor app.

7.  Once Cydia Compactor has finished its job, your device should be partially rooted.  To complete the rooting process, go to the Play Store and install the SuperSU app and Busybox.

Your Galaxy Express is now completely rooted!

All set! Now, you can head to our How to Flash a Custom Recovery procedure for the AT&T Galaxy Express to open up a whole new world of customizations for your Android device!

By the way, don’t be scared, you can always put your device back to stock by heading to our Rooting How To’s section, finding your device, and doing the How to Unroot listed for it there.

22 responses to “How to Root the Samsung Galaxy Express (AT&T)”

  1. Dustin says:

    After hours of trying to root my phone, I finally came across this and found it to work! This was just after finding some proffesional rooters that wanted to charge $60 for it, so im glad I kept looking!

  2. banty Chopara says:


  3. IK says:

    when pressing the start button in the impactor I get an error message that the Device Not Found

  4. Joshua Jacobsen says:

    Same thing @IK

  5. ugly robot says:

    Great job! Worked perfect almost to easy compared to other methods. Thanks a million keep up the good work!

  6. @code says:

    when i press Choose # drop SuperSU su to /system/xbin/su from the drop-down menu. it do his job, but dont get the opion to “Click on Start in the Cydia Compactor app.”

  7. Alfred says:

    Was doubtful of this method at first but this works perfectly..Great work my friend..Great work!!

  8. Brandon says:

    Does it have to be a PC? Can it be a Mac to do this?

  9. Brandon says:

    I can’t find the Impactor.exe file

  10. oliver says:

    it wont complete. Its saying signature bugs unavailable. how do i fix that

  11. Ember Tilton says:

    This is a malicious file. DO NOT DOWNLOAD. It also fails to provide root access to my galaxy j320A ATT

  12. Ragheb Alama says:


  13. WestCoastHwy says:

    Well then, got the Impactor to see my J120A but that’s about it; I did have several malware items but not sure if it was from here. I’m old school and the internet is not what it use to be; there was a day when the WWW was not full of Trolls and Derelicts. So, off I go in search of the infamous J120A root.

  14. MamaShane89 says:

    Is this gonna work or not?

  15. David L Robertson says:

    So, Impactor now seems to read “install SuperSU (aka, root my Android)”. However, the Impactor process says “testing #######” and then “installing package” but then fails with a message “adb.cpp:535 INSTALL_FAILED_INVALID_APK”

    What am I doing wrong?

  16. Christian says:

    does this still work

  17. Christian says:

    i tried doing this on multiple devices but it won’t work. On one device, cydia impactor won’t finish, and on the other device it won’t show me anything from the drop down menu. How can i fix this, i’ve done it the exact same way on both devices, but it won’t work.

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