S21 plus vs iphone 13 pro max July 8, 2019 16 32 64 128 Samsung s21 plus vs iphone 13 pro max Galaxy s21 plus vs iphone 13 pro max S21 plus 5g vs iphone 13 pro max Samsung galaxy s21 plus vs iphone 13 pro max S21+ vs iphone 13 pro max S21 plus vs iphone 13 pro max battery test S21+ vs iphone 11 pro max