sEFix (lag reduction)

sEFix (lag reduction)

100,000 - 500,000 downloads

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On some (older) versions of Android, the JVM (and other components) often read random data from the blocking /dev/random, which has a low entropy by default, causing that some processes block themselves waiting for new data generation with a greater entropy. On newer builds, this problem has been solved, yet depletion of the input entropy pool still seems to slow devices.

So this fix seems to reduce some lag in the Android OS (XDA thread: )

However, the initial post makes some changes that are 'artificial' which probably affects battery duration, so I just created an app that applies a more natural method based on this post: ( )

It just modifies the system's wakeup threshold to update /dev/random values when the entropy is too low. And it's completely reversible :)

NOTE: To modify the threshold ROOT permissions are required.

If you like the app you can also donate clicking in the donate menu option!


android.permission.ACCESS_NETWORK_STATE -> for ad banner.

android.permission.RECEIVE_BOOT_COMPLETED -> for applying the fix on boot. -> for the donations.

Tags: lag fixer for withut root, s with no wake up lag, how to fix game lag without root, sefix v1.3, audio without lag, 4 sound reduce problem, sefix redictor de lag, configure sefix, sefix lag reduction, script reducir lag 2013.

Recently changed in this version


-New icons.
-Big layout changes (inspired on Material design).
-Now the threshold is saved automatically.
-Changes are applied on boot by default.
-Small changes and improvements.

Screenshots sEFix (lag reduction)
View bigger - sEFix (lag reduction) for Android screenshot
View bigger - sEFix (lag reduction) for Android screenshot
Comments and ratings for sEFix (lag reduction)
  • (43 stars)

    by Yang Mors on 21/10/2014

    And I hope it will work continuously. :))

  • (43 stars)

    by Earl Cuevas on 21/10/2014

    It speed up my galaxy tab 4 (idk why my tab laggs)but this pp reallyspeed up my device nice job dev

  • (43 stars)

    by NAFRI Worf on 19/10/2014

    I have CyanogenMod CM 11 Android version 4.4.4 on device LG G2 D802 Everything became quicker and more responsive! This is an app that really deserve 5 stars to the absolute max!

  • (43 stars)

    by mike Scrith on 18/10/2014

    but im not sure about this it really work or not but its seems cool ! Donated !!

  • (43 stars)

    by Rezi J Adrian on 16/10/2014

    This the best apps low device android now faster :)

  • (43 stars)

    by J. Matthew on 15/10/2014

    May be a placebo, but I got little performance boost.

  • (43 stars)

    by Jonathan Cruza on 15/10/2014

    Good app now my phone is less lag thanks a lot to this !