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MF21 Mobile WiFi Router
MF21 4G LTE MIFI Router
MF21 4G MIFI Device
MF21 Mobile WiFi Router
MF21 4G LTE MIFI Router
MF21 4G MIFI Device

MF21 4G LTE MIFI Router Device

  • 2.4G Cat 4 4G LTE MIFI Router
  • 150Mbps Wi-Fi 1T1R 4G MIFI Device
  • 1800mAh / 2100mAh Rechargeable Lithium Battery
  • LTE 1T2R, DL MIMO 2*2
  • Global Frequency Band Customization
  • Size 100mm (H) x 60mm (W) x 14mm (D)

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MF21 4G LTE MIFI Router Device



  • LTE Cat.4 700MHz ~ 2700MHz Band Optional
  • 2.4GHz WiFi 150Mbps 1T1R, Up To 8 Users Online
  • Lithium Battery 1800mAh / 2100mAh
  • Quickly Charging Within 2.5 Hours
  • eSIM optional
  • Cellular Band and UI Customization
  • FOTA Support and Management Service
  • Compact and Small Size


  • MF21 4G LTE MIFI router, also known as 4G MIFI device, MIFI 4G hotspots, and LTE MIFI router can be used to convert Wi-Fi signals and access the Internet on a variety of devices(mobile phones, laptops, tablets, etc.).


  • The 4G LTE MIFI router is a pocket-sized plug-and-play modem, no need for extra software support, easy to carry around, operate and deploy.


  • MF21 4G LTE MIFI router device is a Cat 4 wireless router empowering maximum download speeds of 150Mbps and upload of 50Mbps, ideal for high-speed connectivity requirements.


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Frequency Bands

China & Southeast Asia Europe & Africa Asia Pacific Middle East America

LTE: B1/3/5/8/38/40/41







We welcome worldwide wireless communication/telecom operators or IoT project contractors to inquire more on MF21 4G LTE MIFI router device about global frequency band customization, customized UI / Application / Function / Appearance service, etc.



Passenger Wi-Fi

4G LTE MIFI Router for Personal WiFi

Store Networking

4G LTE MIFI Router for Store Networking

Travel & On The Go

4G LTE MIFI Router for Travel


MF21 4G LTE MIFI Router Device

MF21 4G LTE MIFI Router Device

Basic Parameters

Size (mm)

100mm (H) x 60mm (W) x 14mm (D)

Working temperature

-10℃ ~ 50℃


1800mAh / 2100mAh (removable)

Storage temperature

-20℃ ~ 60℃

Standby time

300 hours (LTE connected and WiFi off)

Working time

6~8 hours



USB 2.0

4G Antenna

1T2R Interal

WiFi Antenna

1T1R Internal


1.8V/3.0V USIM 3FF

LED Indicators

Power LED ×2(Red & Blue)

WLAN LED ×1(Blue)

SMS LED ×1((Blue)

LTE Connection Status LED ×2(Red/Blue)


Network Configuration

Data Rate

LTE FDD: Max 150Mbps (DL) / Max 50Mbps (UL);

LTE TDD: Max 130Mbps (DL) / Min  35Mbps (UL);

WCDMA: Max 21Mbps (DL) / Max 5.76Mbps (UL);

Transmit power

WCDMA: 24dBm+1dB/-3dB;

WiFi 4

Peak Rate: 802.11n:150Mbps

2.4GHz, Up to 8 users online


IEEE 802.11b/g/n

Q: What Are 4G MiFi Devices Used For

A: 4G MiFi devices are small portable WiFi routers that act as personal mobile hotspots permitting electronic equipment to share a 3G or 4G LTE cellular network connection.


Q: Is There A Monthly Fee for a 4G MiFi Device

A: Yes, and the monthly fee is for the data plan offered by communication operators or telecoms. ThinkWill supplies a 4G MiFi device without a SIM card by default. So regarding the detailed data fee, please negotiate with local communication operators or telecoms.


Q: 4G MiFi Device Where To Buy

A: ThinkWill has a reputation for cost-effective 4G MiFi devices and works with global communication operators/telecoms and brands. So for final consumers,  these resources are accessible to look for a 4G MiFi device.


Q: Wireless Router VS MiFi Speed
A: LTE Cat.4 Wireless Router TC20A: 300Mbps Wi-Fi Speed, 2T2R, Up To 32 Users Online;
LTE Cat.4 MiFi MF21: 150Mbps Wi-Fi Speed, 1T1R, Up To 8 Users Online.


The product pictures and screen content on the above pages are for illustration only. The actual product effects (including but not limited to appearance, color, size) and screen display content (including but not limited to background, UI, and graphics) may be slightly different, please subject to the actual product.

The data on the above page are theoretical values, all from ThinkWill's internal laboratory, obtained under a specific test environment (please see each specific description), actual use may be due to individual product differences, software versions, use conditions and environmental factors The difference is slightly different, please refer to the actual use.

Due to the real-time changes in product batches and production supply factors, in order to provide as accurate product information, specification parameters, and product features as possible, ThinkWill may adjust and revise the text descriptions, picture effects and other content on the above pages in real time to match the actual products. Performance, specifications, indexes, parts and other information are matched.

In the event that the above-mentioned modifications and adjustments are indeed necessary, no special notice will be given.

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Shenzhen ThinkWill Communication Technology Co., Ltd.

+86 755-21601999
+86 177 2249 5914
13th Floor, Yishang 3D Industrial Park, No.642-2 Zhoushi Road, Hangcheng Street, Baoan District, Shenzhen, China


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