ChatSim is an intuition of Manuel Zanella, founder and CEO of Zeromobile. In 2003 Manuel Zanella, following his Honeymoon in Kenya, where he spent a huge amount of money to call, had the idea of ​​creating a Sim to reduce the cost of international roaming. In 2007 he created Zeromobile, the mobile operator for roaming low cost that saves up to 85%