com.android.cellbroadcastreceiver- What is it & Used for?

Today in this article, discuss com.android.cellbroadcastreceiver (com android cell broadcast reciever). The cell broadcast module is an extension to the Android framework that enables OEMs to broadcast emergency-related information to their users. In addition, the Android APIs and services are standardized and simplified to reduce repetitive efforts for OEMs, thus reducing fragmentation across the Android. As a result, you can simplify your development burden by using Google’s APIs and services, which reduce the cost of developing cell broadcast apps.

Carrier testing and certification is a notoriously tricky thing to do in the telecommunications industry. For Android, this costs the user more money, as it increases the price of your phone (as OEMs whittle away at their profit margins and carriers have to make up for that loss). CellBroadcast Messaging is a nationwide messaging service designed to help you disseminate critical mass communications to your employees and loved ones after a natural or human-made emergency.

com.android.cellbroadcastreceiver
com.android.cellbroadcastreceiver

The CellBroadcastReceiver app is built into the Android framework starting in Android 11 (API level 28) and higher. The app features a single broadcast receiver to handle system-wide notifications, which any application can send.

What is com.android.cellbroadcastreceiver?

com.android.cellbroadcastreceiver is a package name, work for cell broadcast receiver in android. Now you need to know what is cellbroadcastrecieve?

What is cellbroad Castreceiver?

The CellBroadcastReceiver app provides(used for) a platform for emergency alert notifications and traffic alerts. It offers a unique experience for users, and the app has a distinctive style. And it has multiple icons to differentiate between types of alerts. In addition, the CellBroadcastReceiver system is very reliable and concise. This app has permissive private permission because the default system behavior prevents the end-user from enabling or disabling alerting for emergency and non-emergency alerts.

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How does it work?

  1. InboundSMSHandler is a small helper class that receives a CellBroadcast SMS and reacts when it comes in. The InboundSMSHandler is available for dialog services that require incoming SMS, like chatbots. It acts as the core interface.
  2. When a message comes in, it’s forwarded to the CellBroadcast SMS module for the framework to parse and process the incoming.
  3. Once the CellBroadcastService receives the broadcasted intent, it will forward it to the system default CellBroadcastReceiver app. Keep in mind that if there are registered CellBroadcastReceiver apps in your system, they may also receive the broadcasted intent.
  4. The CellBroadcastReceiver app(com.android.cellbroadcastreceiver package) alerts the user automatically.

What is the permission configuration required?

Android O restricts system applications from obtaining CellBroadcast messages. To gain access to this functionality while still using standard Android APIs (the ones that work in the framework), create a new Android library that includes all the necessary components and sign in your application instead of the platform signing. Also, restrict your app from accessing the CellBroadcast service by adding the permission for android.permission.SEND_CELLBROADCAST in its manifest and fully implementing the  com.android.cellbroadcastservice.permission.C2D_MESSAGE permission in an accompanying service.”

How com.android.cellbroadcastreceiver integrates with messaging app?

You can now link directly to the CellBroadcast app through both apps and messaging apps. With this feature, you will be able to add critical alerts as a message thread in your preferred messaging app, plus open your entire list of emergency alerts from CellBroadcast. In addition, the app allows you to link with existing messaging apps and social media so you can receive alerts directly in your app. For Android users, this is a new feature inside of Settings > Advanced > Emergency alert.

If you want to use your app and still use the CellBroadcast List activity, define the component name: com.google.android.cellbroadcastreceiver/com.android.cellbroadcastreceiver.

This allows you to launch specific activities in your app, from the Google Account login screen, whenever there is a cellular emergency alert that affects any of your apps. Do see not registered on Network.

To launch the App

The following are the steps to launch the app.

  1. The Settings app is the central place for managing your device’s settings. You can access the Settings app from the apps menu.
  2. An app such as an SMS app that you use that includes your history of CellBroadcast messages.
  3. The OEM added an icon to a home screen.

Enabling the CMAS secret code

The CMAS service is only vital for your cellular phone or mobile device receiving Emergency Alert messages – it does not affect the device’s other user-side functionality. Therefore, you do not need to be concerned about the CMAS service management capabilities (or lack thereof) of the app(s) you choose. 

When an emergency arises, the CMAS network is used in transmitting location information to rescue teams as quickly as possible. You can enable the CMAS secret code by dialing *#*#2627#*#*. After you send the unique dialer code, a simple message will appear indicating the CMAS secret code has been enabled. 

Migrating data

The new Android version has a module called “CellBroadcast,” which can save user settings in case of a hardware replacement. Devices running Android 11 must use the new CellBroadcast app in their build. A CellBroadcastContentProvider APK allows you to override the stock cell broadcast APK based on hardware configuration and gender. It also ensures that you preserve the current data before removing the legacy implementation. You can create a content provider by using either ADB or DDMS. Most of the migration done through com.android.cellbroadcastreceiver.

Testing

The Android Compatibility Test Suite (CTS) verifies app-dependent system APIs. It identifies compatibility problems in apps, like crashes or other incorrect behaviors, and automatically creates incompatibilities with new API levels. Debug Mode is a diagnostic tool. In Debug Mode, CMAS testers can identify and resolve technical issues with CMAS systems and end-devices. Testers can use the access code to enable Debug Mode on specific end devices. Only testers who trained for this should use this feature.

Conclusion

The com.android.cellbroadcastreceiver package app allows the end-user to be notified of any alerts issued by authorized bodies. Thereby creating a potentially life-saving solution. By enabling the end-user to be informed of any such alerts. They will be aware of potential dangers and plan their day accordingly. Furthermore, the CellBroadcastReceiver app allows you to remain informed of any actual emergencies or warnings by being notified directly to your Android™ device. There is also a feature that helps us fall in love with this. I hope this article helps you.  If you find any other ways feel free to comment below.

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