GB Whats Pro is a free messaging app for your Android phone that allows you to send messages, make voice calls, and video calls over a data connection or Wi-Fi network. It also allows you to send and receive media files, including photos, videos, and audio.

You can also add contacts from your phonebook and add and remove them from your contact list.

Once you have added a contact, you can send them a message or call them. You can also see the history of messages that you have sent and received.

If you are using GB Whats Pro on your phone, you can also send and receive messages, voice calls, and video calls on your phonebook and contact list.