specific iPhone 13 Pro Max -- the A2643 sold in at least 189 countries -- supports "5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n30, n38, n40, n41, n48, n66, n77, n78, n79); FDD LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66); TD LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48); UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz); [and] GSM/EDGE (850, 900, 1800, 1900 MHz)."It is not compatible with 5G NR bands n29 (700d MHz) and n71 (600 MHz) nor 5G NR mmWave bands n258, n260, and n261.