TRAI Releases Mobile Network Performance Audit for Thrissur District

Overview of Findings

The Telecom Regulatory Authority of India (TRAI) has published the findings of an Independent Drive Test (IDT) conducted in Thrissur District, Kerala, between July 21 and July 24, 2026. The assessment measured key performance metrics for mobile network operators to provide consumers with insights into service quality and to encourage infrastructure improvements.

Methodology

Supervised by the TRAI Regional Office in Bengaluru, the assessment involved testing 2G, 3G, 4G, and 5G networks. The evaluation covered:

• City Drives: Approximately 297.9 km across various locations including Irinjalakuda, Chalakudy, and Thrissur City.
• Highway Drives: 180.4 km covering the route from Kochi to Thrissur and Calicut.
• Hotspots & Walk Tests: Stationary and pedestrian-based testing at key transit points such as railway stations and bus stands.

Performance Highlights

The regulator evaluated parameters including Coverage Gap, Call Setup Success Rate (CSSR), Call Drop Rate (DCR), and data throughput. Observations included:

• Data Performance: Average download speeds varied significantly, with Reliance Jio (RJIL) recording 328.12 Mbps in the city area, followed by Airtel (145.43 Mbps), Vodafone Idea (VIL) (44.52 Mbps), and BSNL (7.92 Mbps).
• Voice Reliability: Call drop rates were zero for Airtel, RJIL, and VIL in the district, while BSNL recorded 17 dropped calls out of 359 established connections.
• Call Silence: Instances of call silence lasting longer than three seconds were noted, with VIL recording 35 such instances in the district testing, while Airtel and RJIL reported zero.

Practical Implications and Verification

The TRAI noted that these observations represent performance metrics at the specific time and location of the tests. The authority has shared these results with the respective Telecom Service Providers (TSPs) for necessary remedial action.

Consumers and stakeholders can access the detailed reports, including interactive maps of specific test routes, dropped call locations, and call silence instances, at the official website at [www.trai.gov.in](http://www.trai.gov.in). For further inquiries, the TRAI Bengaluru Regional Office can be reached via their official contact channels.