The Xiaomi Redmi K50 Extreme Edition Premium 5G Dual SIM TD-LTE CN 256GB 22081212C (Xiaomi Diting) supports 4 GSM bands, 6 UMTS bands, 14 LTE bands, 1 CDMA band, and 10 5G NR bands. See the tables below for details.

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Supported Frequency Bands (35)

GSM

Name Interface
850 GSM
900 (E-GSM) GSM
1800 (DCS) GSM
1900 (PCS) GSM

Supported GSM Protocols

Name Generation
GPRS 2.5G
GPRS MSC33 2G
EDGE 2.5G

UMTS

Name Interface
B1 (2100) UMTS
B4 (1700/2100 AWS 1) UMTS
B5 (850) UMTS
B6 (850 Japan) UMTS
B8 (900 GSM) UMTS
B19 (800 Japan) UMTS

Supported UMTS Protocols

Name Generation
UMTS 3G
HSUPA 3.5G
HSUPA 5.8 3.5G
HSDPA 3.5G
HSPA+ 21.1 3.5G (4G speed)
HSPA+ 42.2 3.5G (4G speed)
DC-HSDPA 42.2 3.5G

LTE

Name Interface
B1 (2100) LTE
B3 (1800 +) LTE
B4 (1700/2100 AWS 1) LTE
B5 (850) LTE
B8 (900) LTE
B18 (800 Lower) LTE
B19 (800 Upper) LTE
B26 (850 +) LTE
B34 (TD 2000) LTE
B38 (TD 2600) LTE
B39 (TD 1900 +) LTE
B40 (TD 2300) LTE
B41 (TD 2500) LTE
B42 (TD 3500) LTE

Supported LTE Protocols

Name Generation
LTE 4G
LTE 100/50 4G
LTE 150/50 4G
LTE 300/50 4G
LTE 300/75 4G
LTE 300/100 4G
LTE 450/50 4G
LTE 450/100 4G
LTE 600/50 4G
LTE 600/100 4G

CDMA

Name Interface
BC0 (800) CDMA

Supported CDMA Protocols

Name Generation
cdmaOne 2G
CDMA2000 1x 3G
LTE 1600 4G

5G NR

Name Interface
N1 (2100) 5G NR
N3 (1800) 5G NR
N5 (850) 5G NR
N8 (900) 5G NR
N28 (700) 5G NR
N38 (2600) 5G NR
N40 (2300) 5G NR
N41 (2500) 5G NR
N77 (3700) 5G NR
N78 (3500) 5G NR


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