SGS2: Silence the camera

  • Root your phone
  • Login through ssh, terminal or some other shell
  • Open the file /data/local.prop - this file may or may not exist
  • Add the following line to the file:
  • Reboot the phone

Now, if the phone is silent, the camera will be silent. But if the phone's volume is not turned down, you will still hear the camera. You can silence the camera even more by removing the sound files. Login through some kind of shell and type:

mount /system -o remount,rw
cd /system/media/audio/ui
mv Shutter_01.ogg Shutter_01.ogg-original
mv camera_click.ogg camera_click.ogg-original
mv camera_click_short.ogg camera_click_short.ogg-original
cd /
mount /system -o remount,ro

On my phone, the camera used to do a focus-beep, followed by a shutter-click. I got it to shut up the shutter, but I couldn't disable the focus. So if I really don't want the subject of the photo to hear me, I'll just turn down the volume.

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SGS2: Removing app

Samsung has preinstalled several applications on the Samsung Galaxy S2 that cannot be uninstalled, such as the boekenbol application from Now this wouldn't be a problem, if only it would stay in the background. But sometimes it doesn't.

In the last few days, a new version of boekenbol was released, and Android keeps nagging to upgrade the app. I don't want to upgrade, I don't want this app to have any permissions on my phone, but I can't remove the app.

My steps to remove boekenbol

First, I upgraded my phone using Samsung Kies to be running the latest Android version currently available. After the upgrade, I was running GINGERBREAD.XWKK2 on a kernel.

Then I rooted the phone, using the CF-Root 5.0 version CF-Root-SGS2_XW_XEN_KK2-v5.0-CWM5. That was actually pretty easy to do.

I installed a few tools for easy access and convenience:

SuperUserGrant and manage Superuser rights for your phone. Don't know if this is required, but I do use it.
SSHDroidSSH Server for Android. Actually a dropbear implementation.

After starting SSHDroid, I start the Wi-Fi hotspot and connect my laptop to it. I logged on using ssh -l root. Then I performed the following commands.

mount /system -o remount,rw                      # mount read-write
mkdir /system/app-disabled
# move the (cr)app out of sight (i'm not totally removing the file from the disk, just in case)
mv /system/app/Bol.com_version_1.0.3.3.apk /system/app-disabled  
mount /system -o remount,ro                      # mount read-only

Other apps I've removed, include: MMM_Smartphone_1.5.1_final.apk MusicHub_10.apk ReadersHub.apk ReadersHub.odex SamsungIM.apk SocialHub.apk SocialHub.odex

My message to

Nobody likes to be forced to have software installed that you don't want. I understand you want to promote your webshop, and pre-installing isn't a problem. But make it removable.

Also, mister Maurice Nieuwland, pointing to Samsung for complaints is a very very childish reaction. Sure, Samsung is to blame for installing the crap. But they wouldn't have, if didn't make them, you've signed the contract.

For forcing your software upon customers and people that aren't even your customers, I'll be boycotting until this app is removable by non-root users.

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