hello nJoy-android
According to cect-shop, the mi max 3 supports the following tapes
2G/CDMA EVDO: BC0,
2G/GSM 850/900/1800/1900MHz (B5/B8/B3/B2),
3G/WCDMA 850/900/1900/2100MHz (B5/B8/B2/B1), 3G/TD-SCDMA 1900/2000MHz (B39/B34),
4G/FDD-LTE 800/850/900/1700/1800/2100/2600MHz...