How To Fix Keyboard Lag on Galaxy S6 and Note 4

There is a simple solution to fix the keyboard lag on the Samsung Galaxy S6, Galaxy Note 5 and Note 4. The Galaxy S6 and Note 5 might be the best devices out there with 3-4GB of RAM, but the poorly optimized TouchWiz skin really decreases the user experience.

One of the biggest complaints that users have with the Galaxy S6, Note 4 and Note 5 is aggressive RAM management. Even though these devices are equipped with 3GB and 4GB of RAM, apps do not stay open for a long time in the background. That’s thanks to Samsung’s SPCM service which kills all tasks in the background.

This service also affects the keyboard experience. If you are a typist, you can definitely see a minor lag between the moment when you press the screen and the moment when the phone picks up the touch and transmits it to the keyboard to insert a letter.

The Android 5.1.1 Lollipop update doesn’t help with the keyboard lag problem either. However, with everything related to Android, there is a fix, which requires root. If you have a rooted Galaxy S6, Note 5 or Note 4 you can fix the TouchWiz keyboard lagging issue.

How to fix keyboard lag problem on S6, Note 5, Note 4

You need a rooted Galaxy phone. If your device is not rooted, check our guide on how to root Galaxy S6, Note 5 and Note 4.

  1. Go to the Play Store from your phone and download ES File Explorer.
  2. Open ES File Explorer and go to the root system of your phone.
  3. Find a file called build.prop. Tap and hold the screen. Open the file using a text editor.
  4. Find the following line: sys.config.spcm_enable=true
  5. And replace it with: sys.config.spcm_enable=false

This will deactivate the annoying SPCM service which kills apps for more RAM. This will fix the Swiftkey keyboard lag on the Galaxy S6, Note 5, Note 4 and other Galaxy devices.



  1. On a computer, this kind of problem turned out to be much more difficult. I was not able to connect the keyboard the first time, but a friend told me what drivers I need to download for this, and I found the logitech keyboard driver here


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