So shall we go through? If yes, here we are with all its significant features. Have a look and get some idea to start using iMessage app for all the devices available right now. Let us focus on its cool features provided in step by step. 2.7 How to Activate imessage App with No Error.2.4.1 Steps to Install imessage on Android.2.1.2 Download iMessage for PC Using iPadian.2.1.1 How to get imessage on pc using Chrome Remote Desktop.2 How to Install iMessage App on Your Device.