In this Article, I am going to introduce my New PCB Design, 4G LTE Module. We have made lots of cool projects using this 2G GSM Module Such as home automation, location tracking, sensor monitoring  and remote sensing.

This 2G GSM Module is Awesome but this is era of 4G and 5G, 2G is outdated technology now. So Say goodbye to the limitations of the 2G GSM Module and welcome the future: The 4G LTE Development Board Design by technolab creation and manufactured by JLCPCB.

This 4G LTE Module is a versatile and powerful communication module that supports a wide range of wireless communication modes, including LTE-TDD, LTE-FDD, GSM, GPRS, and EDGE. It is based on the SIMCOM A7670C LTE modem.

Now we have a question, can this module Support JIO SIM-Card? The Ans is YES this module will Support JIO SIM Card.

And next best thing is that ,this module not only supports 4G Networks this module is also compatible with all 2G and 3G networks as well.

PCB Design.
This is the  Schematic of 4G LTE Module.

After making the Schematic, Convert it into PCB, Arrange and place all the components in desirable places, Once the layout is ready route the wiring and complete the design of PCB.


This article is sponsored by JLCPCB, a leading manufacturer specializing in PCB prototype and fabrication. With their fully automated production lines housed in their own factories, they guarantee excellent quality and consistency in their products, adhering to certifications such as ISO 9001:2015, ISO 14001:2015, and IPC-6012E.

JLCPCB is not only renowned for its high-quality PCBs but also for its extraordinary savings and guaranteed satisfaction. They offer a range of services including PCB assembly with over 350,000 in-stock parts, 3D printing with various materials like resin, nylon, and metal, and high-precision SMT stencils created with state-of-the-art LPKF machines.

Experience fast and stable delivery with JLCPCB, where over 98% of orders are shipped on time, allowing you to iterate your projects more freely with their low-cost and fast-turnaround services. Moreover, their friendly support team is available 24 hours a day through email, live chat, and phone to assist you at any time.

ChooseJLCPCB as your PCB partner to enjoy quality products, extraordinary savings, and guaranteed satisfaction.

Features & Specifications

1.Wireless Communication Modes: This board supports LTE-TDD, LTE-FDD, GSM, GPRS, and EDGE, which make it suitable for a wide range of applications.

2.High-Speed Data Transfer: This board supports a maximum downlink rate of 10Mbps and a maximum uplink rate of 5Mbps.

3.Serial Interface: This board features a serial interface that allows for simple communication with a computer or laptop via a USB to Serial adapter or TTL converter. AT instructions are used to communicate with the A7670C.

4.External Antenna Support: The board features a U.FL male connector, allowing for the connection of an external antenna. This provides greater flexibility in antenna placement and can improve signal reception in areas with poor coverage.

5.Micro SIM Card Holder: The board features a Micro SIM Card Holder, allowing for easy insertion and removal of SIM cards.

6.UART Logic Level Conversion: The board has onboard UART Logic Level Conversion, and VDD Needs to be connected to the host reference voltage.

7.Voltage Regulation: MIC29302WU is used to step down the input voltage, allowing input voltage as low as 5V.

8.LED Indicators: This board features a Power LED and Network Status LED.

9.Supported Bands: This board supports LTE-FDD B1/B3/B5/B8 and LTE-TDD B34/B38/B39/B40/B41.

10. Ultra-Low Sleep Mode Current Consumption: This board has an ultra-low sleep mode current consumption of less than 10mA.

11. Power input: This board has dedicated slot for power supply, I will recommend to use 12volt & 2 Amp  Power Adaptor for it.

Connections with Arduino.
To communicate with this module you can use any of...

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