D921(mini)-version 1:

4G FDD-LTE:B1(2100Mhz),B3(1800Mhz),B5(850Mhz)

3G WCDMA:B1

D921(mini)-version 2:

4GFDD-LTE:B1(2100Mhz),B3(1800Mhz),B5(850Mhz)/B8(900Mhz) 4GTDDLTE:B38(2600Mhz)/B39(1900Mhz)/B40(2300Mhz）/B41（2500Mhz）

3G WCDMA:B1/B8 

D921(mini)-version 3:

4GFDD-LTE:B1(2100Mhz),B3(1800Mhz),B7(2600Mhz)/B8(900Mhz)/B20(800Mhz)

4GTDDLTE:B38(2600Mhz)/B40(2300Mhz)

3G WCDMA:B1/B8 

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Features:

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1. D921mini cpe is 4G LTE WiFi Internet Router ,you can access to internet via HSPA/LTE Data SIM Card. if you don't have 4G sim card , you can use AP mode to externed your wifi

2. 2.4G Router is easy to connect and easy to carry in hand Sharing .the router is mainly aimed at the office ,home ,IoT,outdoor travel and outdoor live streaming. All you need to do is inserting the SIM card, then you will enjoy the WiFi with your friends with 4G LTE router.

3. 4G CPE Router work with 4G to WiFi ,4G to LAN ,AP mode,built-in 2x3dbi antenna ,download speed is up to 150mbps, upload speed is up to 50mbps, and wireless transmission speed is 300mbps. It effectively reduces co-channel interference, expands the wireless transmission range

4. Tips on product using: insert SIM card then power on the router, Even if your SIM card is compatible with the product, it is not necessarily plug and play, you may need to disable the PIN code of the SIM card and modify the APN .