Tip: How to speed up your T-Mobile Samsung Vibrant

The T-mobile Samsung Vibrant is, in general, a very fast device.  Every now and then, the phone lags up or gets stalled in an application and you have to reboot to get it to work quickly again.  I’ll show you a way to speed up your phone and prevent it from these problems.

***This will work on the T-Mobile US branded Vibrant and generic Galaxy S models***

***IMPORTANT: YOU PERFORM THIS AT YOUR OWN RISK, THIS MAY VOID YOUR WARRANTY, I NOR ANYONE ELSE IS RESPONSIBLE IF YOU BRICK YOUR DEVICE.***

I was directed to this thread discussing issues with the way Samsung stores app data on the phone. Apparently the app data is stored on the internal SD vs. NAND and that is considerably slower. Here are the two methods to fix:

*Both Methods require ROOT* (click here for instructions on how to get root)
*Method 1 limits the space of app data, which can possibly cause issues*
*Method 2 requires writing a new Kernel, which comes with it’s own possible issues*
*READ THE THREADS!*

Method 1: http://android.modaco.com/content/sa…oted-try-this/
Method 2: http://android.modaco.com/content/sa…gging-problem/

Hopefully this will be helpful moving forward with the development of this phone!

Note: I have used method 1 which moved the app data from the SD space to the NAND space which significantly increased the speed of my phone, but PLEASE read the links and associated discussion. You are limited to 130MB app space on NAND, which can be limiting depending on which apps you use. Method 2 purports to fix this limitation…

How to check how much app memory you are currently using:

adb shell
su
cd /data/data
busybox du -h|busybox grep M

How to apply method 1

adb shell
su
busybox cp -rp /data/data /dbdata
mv /data/data /data/data.bak
ln -s /dbdata/data /data/data
reboot

How to undo method 1 (no loss)

adb shell
su
busybox cp -rp /dbdata/data /data/data.tmp
rm -r /data/data
mv /data/data.tmp /data/data

How to undo method 1 (point of application)

adb shell
su
rm /data/data
mv /data/data.bak /data/data
reboot

Source: http://forum.xda-developers.com/showthread.php?t=727279

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