Also, change the Port settings: Go to Tools > Port: > COM6 (Arduino/ Genuino Uno).Change your board to Arduino Uno: Go to Tools > Board: > Arduino/Genuino Uno.Connect the USB Cable from Arduino Uno to a PC/Laptop.Insert the micro sim card to the GSM Module.Tutorial Contents Step 1: Physical Connection of SIM 800l GSM Module to Arduino Uno Interface SIM 800l GSM Module with Arduino.Note: Use a micro sim card and it must have a load. And in this tutorial, i am using SIM 800l Module because it is very tiny and easy to use. It was created to describe the protocols for second-generation (2G) digital cellular networks used by mobile phones and is now the default global standard for mobile communications. Global System for Mobile Communication (GSM) is a mobile communication modem.
