gan,mau tanya kenapa ya modem ane gabisa dipake di 4g

padahal udh support 4g, dan modemnya jg udh support frekuensi 1800mhz

Spesifikasi:

Dimensi: 92 x 32 x 14 mm.

Software Support: Windows XP, Vista, Windows 7, Linux, Mac OS.

Radio Frequency LTE FDD: 800/900/2600/1800/2100 MHz.

UMTS: 2100/AWS/900/1900 MHz.

GSM: 850/900/1800/1900 MHz.

Technical Standard LTE: DL 112 Mbps, UL 10 Mbps.

HSPA: DL 43,2 Mbps, UL 5,76 Mbps.

EDGE: 236,8 Kbps, 118 Kbps.

GPRS: 85,6 Kbps, 32,8 Kbps.

Micro SD Slot: Yes.

kira2 masalahnya dmn ya?