We’ll tell you what’s up with it. If you roam about the world and are a user of WhatsApp, it’s a must. With WhatSim [$10] you can chat carefree anywhere in the world as if you were at home using WhatsApp. You can keep in touch with friends, family or colleagues. It helps you stay in touch with the world and tell everyone where you are when you are traveling. Anywhere in the world. More than 600 million people are using WhatsApp. WhatSim works with over 400 operators in roughly 150 countries, so you can chat over WhatsApp for free. That my friends, is what is up!