Hello is an Android app developed by Facebook (1 Hacker Way Menlo Park, CA 94025). Others apps created by Facebook are: Facebook, Facebook Lite, Messenger Lite, Facebook Messenger, Facebook Messenger Kids.

Hello first became available on 22 Apr 2015. It is estimated that Hello has been downloaded between 500000 and 1000000 times from the Play Store.

Hello 4.0.0.0.0 requires the following permissions:

Allows an app to access approximate location. Alternatively, you might want ACCESS_FINE_LOCATION.

Allows an app to access precise location. Alternatively, you might want ACCESS_COARSE_LOCATION.

Allows applications to access information about networks.

Allows applications to access information about Wi-Fi networks.

Allows an application to collect battery statistics

Allows applications to connect to paired bluetooth devices.

Allows applications to discover and pair bluetooth devices.

Allows an application to broadcast sticky intents. These are broadcasts whose data is held by the system after being finished, so that clients can quickly retrieve that data without having to wait for the next broadcast.

Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.

Required to be able to access the camera device.

Allows access to the list of accounts in the Accounts Service.

Allows an application to install a shortcut in Launcher.

Allows applications to open network sockets.

Allows an application to modify global audio settings.

Allows an application to see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether.

Allows an application to read the user's call log.

Allows an application to read the user's contacts data.

Allows an application to read from external storage.

Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.

Allows an application to read SMS messages.

Allows applications to read the sync settings.

Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting. If you don't request this permission, you will not receive the broadcast at that time. Though holding this permission does not have any security implications, it can have a negative impact on the user experience by increasing the amount of time it takes the system to start and allowing applications to have themselves running without the user being aware of them. As such, you must explicitly declare your use of this facility to make that visible to the user.

Allows an application to monitor incoming MMS messages.

Allows an application to receive SMS messages.

Allows an application to record audio.

Allows an application to send SMS messages.

Allows an app to create windows using the type TYPE_SYSTEM_ALERT, shown on top of all other apps. Very few apps should use this permission; these windows are intended for system-level interaction with the user.

This permission is no longer supported.

Allows access to the vibrator.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.

Allows an application to write (but not read) the user's call log data.

Allows an application to write the user's contacts data.

Allows an application to write to external storage.

Allows applications to write the sync settings.