Most of the people I know in the UK use Viber. Likewise most people I know in Japan use Line, Lot's of people in the CHina region use Wechat. It's still a frag

Most of the people I know in the UK use Viber. Likewise most people I know in Japan use Line, Lot's of people in the CHina region use Wechat. It's still a fragmented market and SMS is still the only service that is common. With operators looking to disrupt the market with RCS, it will only fragment it more.