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Are there a way to block all 3G traffic for specified apps?

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Not without root. Beyond that I suspect it would have to be a system-level change, not an app. – Matthew Read Mar 3 '11 at 14:52
What about blocking all internet access for an app? – Chance Mar 17 '11 at 17:39

If you have a rooted device you can filter which specific apps can access the 3G connection with DroidWall.

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That's what I am looking for. :) Thank you, Matt – kv1dr Jul 30 '11 at 9:34

You can block all 3G usage by going to SETTINGS > WIRELESS & NETWORKS > MOBILE NETWORKS and then clciking USE ONLY 2G Networks to disable 3G usage.

There are also lots of widgets available that will allow you toggle between 2G / 3G usage.

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Onavo will let you do this, and it doesn't require your device to be rooted:

"Data hog blocking: Restrict specific apps to Wi-Fi, or block your 3G data altogether once you exceed your data cap to avoid any additional costs"

note that it's only free for a limited time (

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