Twitter and SMS international agreements for interoperability

I questioned Claro Brazil, my mobile phone carrier, why I can’t send messages to Twitter – +44 7624801423.

They answered that Claro has international agreements for interoperability with Argentina, Canada, Singapore, Colombia, Chile, El Salvador, Ecuador, Spain, Estonia, Guam, Guatemala, Honduras, Mexico, Nicaragua, New Zeland, Paraguay, Peru, Puerto Rico, Dominican Republic, Spain, Uruguay, Venezuela and United States.

So, no Twitter for me 😦

I also don’t get SMS from Facebook, Google Agenda. I wonder why…

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