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Permission is only granted to system apps in Android Manifest

Question:

While i am inserting this permission in manifest it shows error " Permission is only granted to system apps"

Actually i used this permission for developing application based on Oauth2 token. But i cant enable this permission. Can any Help me?

Answer1:

MODIFY_PHONE_STATE permission is granted to system apps only.

For your information, there are 2 types of Android apps: system & user

<blockquote>

<strong>User apps</strong> are just all your normal app installations through the Google Play Store, Amazon Appstore or sideloading. These go into the /data partition of your Android phone, which is the part of the internal memory made available for user data and apps.

<strong>System apps</strong> are basically the apps that come pre-installed with your ROM. In a standard Android user environment, the user doesn’t have write access to the /system partition and thus, installing or uninstalling system apps directly isn’t possible.

In order to install an app as a system app on your Android device, <strong>your device must either be rooted or have a custom recovery installed (or both).</strong>

</blockquote>

That being said, that error is actually wrong because you have a valid code and compilation should work. It would be better if it gave a warning instead. In Eclipse you can easily fix it. Just go to:

Window -> Preferences -> Android -> Lint Error Checking.

Find <strong>ProtectedPermission</strong> from the list and set the severity to something other than error(info for example). This way your project will still compile.

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