Sales of used smartphones in Japan are expected to hit an all-time high in fiscal 2024, as rising prices of new devices drive consumers toward more affordable options, a Tokyo-based research company said. Sales of used smartphones are projected to climb 15.5 percent from the previous year to 3.15 million units, marking a record high for the sixth consecutive year, also lifted by purchases by foreign visitors, MM Research Institute Ltd. Sales are estimated to further expand in the coming years, possibly hitting 4.38 million units in fiscal 2028, on the back of elevated prices of new devices due…