Description

The EC20-4G module is a 4G LTE communication module produced by Quectel. It supports multi-band LTE network connections and is suitable for IoT, vehicle-mounted communication, and other application scenarios. This module integrates rich interfaces and features to meet various data transmission requirements.

Module Model Used This Time

• Model: EC20CEHDLG-MINIPCIE-C
• Interface Type: Mini PCIe
• LCSC Mall Number: C2916192
• LCSC Mall Purchase Link: 👉:EC20-4G Module (Mini PCIe Interface)

Download the Corresponding Image

Use Network Disk 🚀 to download the .img image file from the System Image/Android14/ directory.

This document uses the image: android14_hdmi_dp_ap6256_ec20_update.img

Select the image with ec20 in the filename.

Flash the Image to the Development Board

Refer to Finished Image Flashing to flash the downloaded image file to the development board.

Connect the Module

Insert the EC20-4G module into the board's Mini PCIe interface and connect the antenna.

Insert the SIM card:

Important Note: The SIM card must be a 4G network standard card with data service enabled, otherwise internet access will not work.

Power On and Test

Start the Android system and you will see the 4G network is successfully connected and can access the internet:

Use ADB Commands to Test Network Connection (Android System ADB Usage Tutorial):

Make sure WiFi is disconnected and only use 4G network for testing.

1. Check if the device is connected:

adb devices

2. Test network connectivity:

adb shell ping -c 4 www.baidu.com