The company selling this crappy licence is also not responsive so don't expect to get your money back when your transfer doesn't work. It's overly complicated and I've tried following the instructions a hundred times but then just gave up because it would just back up some bits of historic data but far from everything so literally almost all my Viber data eventually got lost. DO NOT BUY THIS SOFTWARE!!! This is such a scam of a software.you'll pay almost 30 usd upfront and won't have any guarantee that the service will work and from what you can read in many reviews it doesn't work for many people.