Question

the instant message software or download or install on the user device​

Answer 1

The basic needs to use IM (chat) software are (a) an active Internet connection (it through/over the Internet that instant messaging is possible), (b) chat software to be downloaded (the chat software could be Watsapp, Skype, We chat, Viber, Telegram, FB messenger, Meebo, etc), and an account to be opened (in the name

Answer 2

The basic needs to use IM (chat) software are (a) an active Internet connection (it through/over the Internet that instant messaging is possible), (b) chat software to be downloaded (the chat software could be Watsapp, Skype, We chat, Viber, Telegram, FB messenger, Meebo, etc)