• DISHA R
• KRUTHI M
• DHARANI PRIYA TK
• DR DEVIKA B

This project develops a Mobile Phone Detection System using an RF detection circuit with an LM358 op-amp, an Arduino microcontroller, and a SIM800C GSM module. The RF circuit detects electromagnetic signals from active mobile phones, activating LED and buzzer alerts. The Arduino processes the signal and, via serial communication, commands the GSM module to send SMS notifications to authorities for prompt action in restricted zones like exam halls or workplaces. The system combines RF sensing, microcontroller processing, and GSM communication for real-time mobile detection. It features signal filtering, power management, and programmable logic, making it a reliable, adaptable tool for enforcing mobile usage restrictions in secure environments.

Arduino, Detection, GSM, Mobile, Security.

"GSM BASED CELLPHONE DETECTOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 11, page no.g234-g237, November-2025, Available :http://www.jetir.org/papers/JETIR2511674.pdf

"GSM BASED CELLPHONE DETECTOR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 11, page no. ppg234-g237, November-2025, Available at : http://www.jetir.org/papers/JETIR2511674.pdf