Blackstone is now a ChatSim distributor in Miami, A new way to stay in touch around the world.
ChatSim is an international Sim card that lets you chat free of charge and with no limits with all the most popular Instant Messaging Apps in the world.
ChatSim connects to more that 400 operators in about 150 countries, which means that anywhere in the world you will be connected to the provider with the best coverage and signal. And best of all, it works on all smartphones and tablets.
