Call and Message using Arduino and GSM Module

Sometimes people find it difficult to use the GSM Module for its basic functions like calling, texting etc., specifically with the Microcontrollers. So here we are going to build a Simple Mobile Phone using Arduino, in which GSM Module is used to Make the Call, answer the Call, send SMS, and read SMS, and also this Arduino phone has Mic and Speaker to talk over this Phone. This project will also serve as a proper interfacing of GSM Module with Arduino, with all the Code needed to operate any Phone’s basic functions.


Components Required:

  • Arduino Uno
  • GSM Module SIM900
  • 16×2 LCD
  • 4×4 Keypad
  • Breadboard or PCB
  • Connecting jumper wire
  • Power supply
  • Speaker
  • MIC
  • SIM Card

Working Explanation:

In this Arduino Mobile Phone Project, we have used Arduino Uno to control whole system’s features and interfacing all the components in this system. A 4×4 Alphanumeric Keypad is used for taking all kind of inputs like: Enter mobile number, type messages, make a call, receive a call, send SMS, read SMS etc. GSM Module is used to communicate with the network for calling and messaging purpose. We have also interfaced a MIC and a Speaker for Voice Call and Ring sound and a 16×2 LCD is used for showing messages, instructions and alerts.

Alphanumeric is a method to enter numbers and alphabets both by using same keypad. In this method, we have interfaced 4×4 keypad with Arduino and written Code for accepting alphabets too, check the Code in Code section

Read More:  Call and Message using Arduino and GSM Module

This Post / Project can also be found using search terms:

  • Arduino Cellphone Gsm Moduels
  • call and message using arduino and gsm module ckt
  • gsm program of arduino using sms and calling
  • how to transfer voice call message through gsm module arduino

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