32 responses

  1. bfoster68
    July 24, 2012

    Love the detail Jeff. looking forward to Part 2

  2. User
    July 31, 2012

    Hi, nice write up! I was wondering if you had any thoughts about the following under ICS:

    ro.kernel.android.checkjni=0
    ro.kernel.checkjni=0
    ro.config.nocheckin=1

    Thanks!

    • Jeff
      July 31, 2012

      I’ll definitely include them in my Part 2 post. Thanks!

  3. Arrancamos
    August 2, 2012

    Great Jeff, I’m writting a tweak tool that lets you take backups of build.prop & gps.conf and change their values with a recommended option, so the user just do some clicks and changes are made easy. It is useful for me because I used to change ROMs like I do with my underwear ^^

    of course it lets you save/load/restore original tweaks/settings respectively.

    So man, hope you keep investigating about this because my spare time it’s not enough.

  4. Pete10
    August 22, 2012

    Nice overview, waiting for the next part. Will it also cover some init.rc commands (setprop net.tcp…)?

  5. Mr. S
    September 14, 2012

    Your code formatting looks a little broken: there are instances of > and < in some of the snippets.

    Great write-up, however!

  6. Crack
    October 8, 2012

    Great! Looking forward to part 2!

  7. oreo
    October 14, 2012

    Wow, great guide! Lemme suggest all the 3G tweaks, classes and the net.tcp.buffersizes for part 2, and the power collapse/sleep mode/fast dormancy ones!

    Also does setting google DNS (8.8.8.8 8.8.4.4)help?

    • oreo
      October 14, 2012

      I think a huge collection of all those is stored here: http://forum.xda-developers.com/showthread.php?t=1887997
      There’s the ones you already covered, all the other “most used” ones and a LOT of tweaks I didn’t even know they existed.

      • Jeff
        October 15, 2012

        Thanks for the link. I’m putting together a list for Part 2 now so I’ll definitely try and hit some of those you mentioned.

  8. Andrea Budelacci
    October 22, 2012

    Hi,
    is there a way to disable/enable the spell_check_enable via build.prop ?

  9. Fo
    October 29, 2012

    wow this is the most helpful build.prop article for ics so far! Great job!

    +1 for mythbustering this file :D

  10. AnhNguyen
    November 4, 2012

    Where is the part2 ? thanks for good information

  11. Jeff
    November 5, 2012

    Part 2 is up!

  12. cheryl
    January 17, 2013

    Thanks your site came up quick on Google!

  13. Leo
    February 10, 2013

    Hi Jeff.
    I’d like to ask you: Does this build.prop tweaks explanatory article of yours apply to/for smartphones running Gingerbread 2.3.4?

    Or nothing of this has to do with GB and it only is for ICS?

    I’d like to read it all, anyway, but I’d like to know if it will be fine to use these tweaks for GB. Partially? None at all? Only specific ones? Please do try to help me :(

    My phone is the Xperia Pro (Mk16, rooted) running Stock GB 2.3.4. It works so fine (gaming, browsing, multimedia, etc) that I think no tweak could ever improve its beautiful performance. So I’m reading about this build.prop tweakings just to get knowledge to experiment and see.

    I hope to get an answer from you soon : ) And if it not applies, please do try to make something like this for GB :(

    Leo.

    • Jeff
      February 11, 2013

      Leo, All these tweaks are from the perspective of Ice Cream Sandwich. Most, if not all, of the findings still apply in Jelly Bean as well. However, Gingerbread code base is significantly different than ICS and I’m not really looking through it very thoroughly as I go through various properties. However, I do point out a few times that after a cursory inspection of GB code, many of these properties don’t existing in GB either.

  14. Guilherme
    February 23, 2013

    Everywhere on XDA they post those tweaks like its going to make a miracle. Thanks for sharing your invaluable knowledge with us Jeff.

  15. gUmz
    January 30, 2014

    Hello could you please make a review of Build.prop for Jelly Bean. Many thanks

    [WORDPRESS HASHCASH] The poster sent us ‘0 which is not a hashcash value.

  16. GB
    May 24, 2014

    thx for sharing knowledge

  17. unknown
    August 2, 2014

    Found new good app called VM Tweaks to optimize your device

    https://play.google.com/store/apps/details?id=vm.tweaks.geha

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