I were download and install the imo app yesterday and I have received very bad experience, this app is work very slowly and the registration process is too bad then video calling app quality is too bad. It is not connected to other person in one time.then calll 3-4 time to connect the people.and sound quality is also too bad.and one most important thing is that it is not popular now because of this bad service. Please if you want to save your time then not install it.and try another app to install. Please dont install this app. Not work properly anymore. IMO is not suitable for youth generation