Entire South America is covered by Iridium and Inmarsat. The further you go to south the nearer located is the Inmarsat satellite position over the northern horizon. So we strongly recommend an Iridium phone for mountainous regions.
Using BGAN in Brasila
Regarding our information the usage of BGAN is up to 90 days possible without any restriction. If you like to use your BGAN longer you have to register the SIM card at concerned authorities. Unrestrictedly usable are SIM cards from the Service Provider MVS, we offer this SIMs as well.