In Android, permissions are essential for controlling access to protected resources and sensitive user data. Permissions determine which actions an app can perform and what resources it can access on a device. Android classifies permissions into different categories to better protect user privacy and system integrity. The most common categories are normal permissions and dangerous permissions. ### Normal Permissions Normal permissions are those that don't pose a significant risk to user privacy or the device's security. These permissions typically involve accessing features or data that are not sensitive. For instance, allowing an app to access the internet or set the wallpaper does not expose the user to significant security risks. As a result, these permissions are automatically granted by the system during installation, without requiring the user’s explicit approval. Some examples of normal permissions include: * INTERNET: This permission is used to allow an app to access the internet. Apps that need to retrieve data from a server or access web resources must request this permission. * ACCESS_NETWORK_STATE: It is used to check the status of the device's network connection, such as whether the device is connected to Wi-Fi or mobile data. * SET_WALLPAPER: This permission allows the app to change the wallpaper on the device. Since these actions do not compromise user data, they are considered low-risk and do not require the user to approve the permission explicitly. Upon installation, the app is granted these permissions automatically. ### Dangerous Permissions Dangerous permissions, on the other hand, relate to actions that could affect the user's privacy or the device's security. These permissions require user consent before they can be granted. Android requires developers to explicitly request these permissions at runtime, even if they were declared in the app's manifest file during installation. These permissions are considered "dangerous" because they give apps access to sensitive user information or potentially harmful system resources. Some examples of dangerous permissions include: * READ_CONTACTS: This permission allows an app to access the user's contacts. Since contacts may contain personal information like phone numbers and email addresses, this permission is classified as dangerous. * ACCESS_FINE_LOCATION: This permission allows the app to access precise location information, such as GPS coordinates. Since location data can reveal a user’s whereabouts and patterns, this permission requires explicit user consent. * CAMERA: This permission is required to use