Aircard 785S LTE usage in sout and central america

I am living in Germany where I want to be the mobile hotspot, but I want to use it in south and central america, in Brasil, Peru, Bolivia, Mexico and possibly cuba and would like to know if it works there with the frequency bands. Does somebody now? the support told me that it works worldwide, but the cannot assure that it works with sim cards of these countries. Who can help?