Hey,
VIBER:
-Ability to register to the app using phone number
-Ability to automatically sync device contacts(using viber)
-Ability to message your friends
-Ability to make free phone and video calls with HD sound quality
-Ability to Share photos, video messages, voice messages, locations, stickers and emoticons
-Ability to download stickers from app store
-Ability to create group messages with up to 100 participants; become an Admin and manage your group chats – edit info and delete participants
-Ability to see public chats and like,share the chat,multimedia and add to favorite
-Ability to play game with in-app characters and earn points
-Ability to get Push notifications when someone messages and the user is offline
WHATSAPP:
-Ability to register using phone number by entering the verification code sent by the support to the user's phone
-Ability to immediately sync contact list after registeration
-Ability to establish chat with the saved contacts
-Ability to share photos by browsing from the device,taking clicks using in-app camera
-Ability to share contacts,location,album,audio,record video using in-app cam recorder
-Ability to record audio and send it to contacts
-Ability to have video chat,free voice call(data sense enabled)
-Ability to create group and establish chat within group and share photos,images,albums,audio,video etc
-Ability to send emojis
-Ability to add contacts to favorite list
-Ability to see other user's last online time status
Thanks
MY