I just installed Skype on my smartphone today. Actually, since I don’t have a headset, I decided to use my smartphone, not my computer.By the way, have you ever heard of LINE? LINE is an App like WhatsApp. Most Japanese people are using LINE, not WhatsApp. I think LINE is more fun than WhatsApp, because you can use many fun stickers on LINE. If you wanted to chat with Japanese people, it might be good for you to use LINE:)