With over 700 MM users worldwide, there’s a decent chance you’re chatting with friends and family on WhatsApp. If you wanted to keep in touch with those people while traveling abroad you’d most likely incur absurd roaming fees with your domestic service provider or track down a sim card of a local carrier and add data to it. Neither situation is ideal.

Beyond the initial cost of €10, WhatSim will let you keep in touch over WhatsApp for free… expand full story