TTgo T-Call ESP32 Module Project This project utilizes the TTgo T-Call ESP32 module to perform various tasks such as making calls, sending and receiving SMS messages, checking battery status, and more ...

This first part of the multi-part article focuses on designing the basic UI and testing the GSM module. EFY note: Before proceeding with the UI code, install ESP32 on Arduino IDE. Then, install the ...

Holding multiple SIM cards? You could face Rs 2 lakh fine, jail time — All your questions answered The maximum number of SIM cards an individual can hold depends on the region.

Discover the differences between physical SIM cards and eSIM technology to determine the best option for your smartphone needs. Evaluate factors like security, convenience, and device ...

This research focuses on making microcontroller-based devices to prevent fires by turning off electricity based on smoke and fire detection and sending short messages (SMS) to registered numbers. This ...

Vodafone is working to rollout a cryptocurrency wallet integrated in a smartphone SIM card.

If you have a iPhone 13 or older, your device still has a physical SIM card. Here's a guide on how to remove it.

Have you ever wondered exactly how a SIM card works? We'll help you understand why your phone needs one and what they do to keep you connected.

When you sign up for Tello, you will need to purchase a SIM card in order to activate your service. The SIM card is what allows your phone to connect to Tello’s wireless network, and without it, you ...

This is a comprehensive Arduino library to make HTTP or HTTPS communication through the SIMCom SIM800L module. The library has been designed to limit the memory usage by working with the same shared ...