whether an interpreter is required can be determined during the initial scheduling of the appointment - if needed, the interpreter should be thoroughly briefed, before the meeting, to ensure everyone is on the same page - sophisticated and modern presentations, with materials printed in brazilian portuguese could make all the difference to successful business interactions.

it is in good taste to have cellular phones turned off, or at least in silent mode, during meetings and business meal times - constantly checking a smart phone for messages or emails is considered rude, and if absolutely necessary this should be done away from the table.

if an urgent call is expected, it is best to inform the other party beforehand, so they can anticipate the distraction and understand the context of the behavior.