The Asus ZenFone 5Z 2018 Dual SIM TD-LTE IN ZS621KL 256GB supports 4 GSM bands, 4 UMTS bands, and 15 LTE bands. See the tables below for details.

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Supported Frequency Bands (23)

GSM

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

Supported GSM Protocols

Name Generation
GPRS 2.5G
EDGE 2.5G

UMTS

Name Interface
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)
DC-HSDPA 42.2 3.5G

LTE

Name Interface
B1 (2100) LTE
B2 (1900 PCS) LTE
B3 (1800 +) LTE
B5 (850) LTE
B7 (2600) LTE
B8 (900) LTE
B18 (800 Lower) LTE
B19 (800 Upper) LTE
B20 (800 DD) LTE
B26 (850 +) LTE
B28 (700 APT) LTE
B38 (TD 2600) LTE
B39 (TD 1900 +) LTE
B40 (TD 2300) LTE
B41 (TD 2500) LTE

Supported LTE Protocols

Name Generation
LTE 100/50 4G
LTE 150/50 4G
LTE 300/50 4G
LTE 300/100 4G
LTE 400/100 4G
LTE 450/50 4G
LTE 450/100 4G
LTE 600/50 4G
LTE 600/100 4G


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