RealCaller : Caller ID

The Caller ID app is a free application that allows users to identify incoming calls and block unwanted calls. It requires an internet connection to function properly. The app offers three main features: block calls, phone number lookup, and name lookup.

The block call feature allows users to block unwanted calls from specific phone numbers. In order for this feature to work, users must grant the app the necessary permissions, including access to call logs and the ability to make phone calls.

The phone number lookup feature allows users to search for the name associated with a specific phone number. Similarly, the name lookup feature allows users to search for the phone number associated with a specific name. Both of these features require an internet connection to access the app's server and retrieve the desired information.

In order to use the search feature, users must grant the app permission to access their phone state. This allows the app to properly search for and display information related to incoming calls.

The app also offers a chat feature, which allows users to communicate with their contacts who also have the app. To use this feature, users must grant the app permission to access their contacts. This allows the app to frequently check for new or updated users who are available to chat.

In order to provide the search feature, the app identifies each device by accessing its unique device ID. This allows the app to properly search for and display information related to incoming calls.

The app also requires certain permissions to keep its features functional. These include the ability to receive boot completed notifications and the ability to keep the app running in the background for extended periods of time. These permissions ensure that the caller ID and call blocking features remain functional even after the device is rebooted or the app has been running in the background for a long time.