Whats the best way to call Brazil for free using a Samsung smartphone to landline phones? If someone lives in el salvador, how can they go about calling this way? What app/system other than Skype will allow for this to happen? Can it be done for from el salvador 100% free of charge? How can someone in el salvador call brazil for free via samsung phone to landline phones in brazil for like 2 hours or more with no charges?? Can someone please help me!!!!