Samsung Galaxy A53 5G SM-A536U SmartPhone Unlocked from AT&T. AT&T Unlocked. Samsung Exynos 1280. only Verizon version has mmWave (5G 260, 261), but does not have 5G 12, 25, 30, 41, 71. 5G: 2, 5, 12, 25, 30, 41, 66, 71, 260, 77-C, 78, 261.