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Execute AT+CSQ to receive received signal strength indicators.

GSM-TIPS-2025-001 Date: April 13, 2026 Author: Telecommunications Analysis Unit Audience: Mobile users, network technicians, IoT developers, and telecom students

GSM is being phased out in many countries (e.g., AT&T shutdown 2G in 2017, Vodafone UK by 2033). However, GSM remains critical for:

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