# LTE EC21 series

## Key features
- Compatible with multi-mode LTE Standard EC25 series/EC20-CE/EG25-G/EG21-G modules
- Supports Qualcomm® IZat™ location technology Gen8C Lite
- Supports DFOTA
- Supports DTMF
- Multi-constellation GNSS receiver

## Overview
Quectel EC21 is a series of LTE Cat 1 module optimized specially for M2M and IoT applications. It features cost-effective, low-power LTE connectivity, and delivers maximum data rates up to 10 Mbps downlink and 5 Mbps uplink. These make EC21 series an ideal solution for numerous IoT applications that are not reliant on high speed connectivity but still require the longevity and reliability of LTE networks.

EC21 series is compatible with Quectel multi-mode LTE Standard EC25 series/EC20-CE/EG25-G/EG21-G modules in the compact and unified form factor. It contains 12 variants: EC21-A, EC21-V, EC21-AUT, EC21-AU, EC21-AUX, EC21-E, EC21-EU, EC21-EUX, EC21-EC, EC21-KL, EC21-J and EC21-IN. This makes it backward-compatible with existing EDGE and GSM/GPRS networks, ensuring that it can easily migrate from LTE to 2G or 3G networks.

EC21 series supports Qualcomm® IZat™ location technology Gen8C Lite (GPS, GLONASS, BDS, Galileo and QZSS). The integrated GNSS greatly simplifies product design, and provides quicker, more accurate and more dependable positioning.

A rich set of Internet protocols, industry-standard interfaces and abundant functionalities (USB serial drivers for Windows 10/11, Linux and Android) extend the applicability of the module to a wide range of M2M and IoT applications such as smart metering, wearable devices, environmental monitoring, asset tracking, fleet management, smart safety and alarm systems.

## Product Brochure
Quectel_Product_Brochure_V8.6.pdf  
[Download](https://www.quectel.com/content/uploads/2026/05/Quectel_Product_Brochure_V8.6.pdf)

## Documentation and resources
- **Application Note**
  - **Quectel_WCDMA&LTE_Audio_Design_Note_V1.1**  
    File Size: 1.96 MB  
    [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

  - **Quectel_EC2x&EG2x&EG9x&EM05_Series_eSIM_LPA_Application_Note_V1.0**  
    File Size: 402.29 KB  
    [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

  - **Quectel_EC2x_Series&EG25-G_SGMII_Application_Note_V1.0**  
    File Size: 133.84 KB  
    [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

  - **Quectel_EC2x&EG2x&EG9x_Series_Security_Feature_Application_Note_V1.1**  
    File Size: 188.90 KB  
    [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

  - **Quectel_EC2x&EG2x&EG9x&EM05_Series_Secure_DFOTA_Mechanism_Introduction_V1.0**  
    File Size: 276.92 KB  
    [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_RF_FTM_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
347.27 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_Data_Call_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
3.43 MB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_DFOTA_Upgrade_Guide_V1.4](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
234.42 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_MQTT_Application_Note_V1.5](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
300.36 KB  

## [Quectel_EG25-G&EC2x_Series_Bluetooth_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
339.22 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_Power_Back-off_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
273.94 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_LwM2M_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
247.50 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_Low_Power_Mode_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
268.41 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_Network_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
414.15 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_QuecCell_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
261.36 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_Secure_Boot_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
590.85 KB  

## [Quectel_EC2x&EG9x&EG2x-G_Series_Software_Configuration_For_AT&T_Data-Only_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
205.74 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_PPP_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.29 MB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_Terminal_Device_Development_Notes_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
152.95 KB  

## [Quectel_EC2x&EG9x&EG2x-G&EM05_Series_IMS_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
531.00 KB  

## [Quectel_EC2x&EG9x&EG2x-G_Series_Software_Configuration_for_AT&T_3G_Sunset_Guide_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
230.47 KB  

## [Quectel_LTE_Standard_UAC_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
324.21 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_USB_Descriptor_Introduction_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
276.29 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_FILE_Application_Note_V1.3](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
313.08 KB  

## [Quectel_EC2x&EG9x&EG2x-G&EM05_Series_MMS_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
256.46 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_TCP(IP)_Application_Note_V1.7](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
451.33 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_GNSS_Application_Note_V1.6](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
526.16 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_SMTP_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
240.54 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_FTP(S)_Application_Note_V1.3](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
365.99 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_SSL_Application_Note_V1.3](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
278.29 KB

## [Quectel_EC2x_Series&EG25-G_Wi-Fi_Application_Note_V1.5](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
416.43 KB  

## [Quectel_EC2x&EG9x_TTS_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
285.79 KB  

## [Quectel_EC2x&EG9x&EG2x-G&EM05_Series_HTTP(S)_Application_Note_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
465.13 KB  

## [Quectel_EC2x_Series&EG25-G_Socket_Forwarding_Application_Note_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
300.04 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_QSIMCFG_AT_Commands_Manual_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
243.48 KB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_AT_Commands_Manual_V2.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.64 MB  

## [Quectel_EC2x&EG2x&EG9x&EM05_Series_QCFG_AT_Commands_Manual_V1.6](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
747.73 KB  

## [EC2x&EG9x_AWS_IoT_Platform_Access_Guide](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.20 MB  

## [Quectel_Windows_USB_Driver(Q)_ECM_V1.1_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
17.27 MB  

## [Quectel_Linux_Android_QMI_WWAN_Driver_V1.3_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.26 MB  

## [Quectel_Linux_USB_Serial_Option_Driver_V1.1_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
27.47 MB  

## [Quectel_Android_RIL_Driver_radio1.4_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
2.30 MB  

## [Quectel_Android_RIL_Driver_radio1.5_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
2.36 MB  

## [Quectel_Android_RIL_Driver_ndk_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.62 MB  

## [Quectel_Android_RIL_Driver_radio1.6_V4.5_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
2.39 MB  

## [Quectel_Android_RIL_Driver_radio1.5_OemHook_V4.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
2.37 MB  

## [Quectel_Android_RIL_Driver_aidl2_V4.7_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
2.01 MB  

## [Quectel_Android_RIL_Driver_aidl3_V4.7_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.75 MB  

## [Quectel_Android_RIL_Driver_aidl1_V4.7_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
1.68 MB  

## [Quectel_Windows_USB_Driver(Q)_NDIS_V2.8_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
9.92 MB  

## [Quectel_UC20&UC15&EC20&EC21&EC25_Windows_USB_Drivers_Installation_Guide_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
2.11 MB  

## [Quectel_EC2x&EG2x&RG255C_Series_Compatible_Design_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
634.35 KB  

## [Quectel_EC2x&EG2x-G_Compatible_Footprint&Part_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
133.23 KB  

## [Quectel_EC21_Series_Reference_Design_V1.8](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
570.68 KB  

## [Quectel_EC21_Footprint&Part_20180511](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)
File Size  
71.22 KB

## Quectel_EC200x&EC2x_Series_Compatible_Design_V1.0

File Size  
769.37 KB  

## Quectel_EC200A&EC2x_Series_Compatible_Design_V1.0

File Size  
890.80 KB  

## Quectel_EC2x&EG2x_Series_PCB_Design_Guide_V1.3

File Size  
5.45 MB  

## Quectel_EC2x&EG2x-G&UC200T_Series_Compatible_Design_V1.2

File Size  
1.19 MB  

## Quectel_EC21_Series_Hardware_Design_V2.3

File Size  
2.15 MB  

## ToolKit

### [QFlash_V8.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

File Size  
326.70 MB  

### [Quectel_EC25&EC21&EC20 R2.0_QFlash_Linux&Android_User_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

File Size  
793.37 KB  

## User Guide

### [Quectel_EC2x&EG2x&EG9x&EM05_Series_Software_Thermal_Management_Guide_V2.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

File Size  
213.01 KB  

### [Quectel_Antenna_Design_Note_V3.4](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F)

File Size  
1.14 MB  

## Related products

### [LTE OPEN EVB kit](https://www.quectel.com/product/lte-open-evb-kit/)

![LTE OPEN EVB kit](https://www.quectel.com/content/uploads/2021/10/20180926100113803.png)  
<time>23 March 2024</time>  
[Read more: LTE OPEN EVB kit](https://www.quectel.com/product/lte-open-evb-kit/)  

### [UMTS & LTE EVB kit](https://www.quectel.com/product/umts-lte-evb-kit/)

![UMTS & LTE EVB kit](https://www.quectel.com/content/uploads/2021/10/20170413143548112.png)  
<time>23 March 2024</time>  
[Read more: UMTS & LTE EVB kit](https://www.quectel.com/product/umts-lte-evb-kit/)  

### [YF0028AA 4G adhesive mount FPC + cable dipole embedded antenna](https://www.quectel.com/product/yf0028aa-4g-adhesive-mount-antenna/)

![YF0028AA 4G adhesive mount FPC + cable dipole embedded antenna](https://www.quectel.com/content/uploads/2024/09/YF0028AA-side-view-e1727191903574.png)  
<time>23 March 2024</time>  
[Read more: YF0028AA 4G adhesive mount FPC + cable dipole embedded antenna](https://www.quectel.com/product/yf0028aa-4g-adhesive-mount-antenna/)  

### [YEGB000Q1C GNSS L1 adhesive + magnetic mount low profile active external antenna](https://www.quectel.com/product/yegb000q1c-active-gnss-magnetic-adhesive-antenna/)

![YEGB000Q1C GNSS L1 adhesive + magnetic mount low profile active external antenna](https://www.quectel.com/content/uploads/2024/09/YEGB000Q1C-side-view-e1727168513857.png)  
<time>23 March 2024</time>  
[Read more: YEGB000Q1C GNSS L1 adhesive + magnetic mount low profile active external antenna](https://www.quectel.com/product/yegb000q1c-active-gnss-magnetic-adhesive-antenna/)

### [Quectel_EC2x&EG2x&EG9x_Series_Power_Back-off_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F) — File Size: 273.94 KB

### [Quectel_EC2x&EG2x&EG9x_Series_Secure_Boot_Application_Note_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Flte-ec21-series%2F) — File Size: 590.85 KB

## Also of interest

- [LTE EC21 Mini PCIe series](https://www.quectel.com/product/lte-ec21-mini-pcie-series/)
- [LTE EG25-G](https://www.quectel.com/product/lte-eg25-g/)
- [LTE EG21-G](https://www.quectel.com/product/lte-eg21-g/)