**Summary:**
The Telecom Regulatory Authority of India (TRAI) released its Independent Drive Test (IDT) findings for the Mumbai Licensed Service Area (LSA) on July 25, 2025. The drive tests, conducted in June 2025 under the supervision of the TRAI Regional Office, Bengaluru, assessed mobile network performance across Mumbai City and surrounding areas, including 243.1 km of city routes, 267 km of highway routes (Mumbai-Charoti-Kasatwadi-Vikramgad-Kalyan-Thane-Mumbai), and 9 hotspot segments. The tests evaluated 2G, 3G, 4G, and 5G technologies.
Key parameters assessed include:
* **Voice Services:** Call Setup Success Rate (CSSR), Drop Call Rate (DCR), Call Setup Time, Call Silence Rate, Speech Quality (MOS), and Coverage.
* **Data Services:** Download/Upload Throughput, Latency, Jitter, Packet Drop Rate, and Video Streaming Delay.
**Key Performance Indicators:**
* **Call Setup Success Rate (CSSR) in Autoselection mode (5G/4G/3G/2G):** Airtel (94.81%), MTNL (28.71%), RJIL (99.46%), and VIL (94.03%).
* **Drop Call Rate (DCR) in Autoselection mode (5G/4G/3G/2G):** Airtel (0.56%), MTNL (22.99%), RJIL (1.35%), and VIL (0.72%).
* **Call Setup Time in Autoselection mode (5G/4G/3G/2G):** Airtel (1.26 seconds), MTNL (4.40 seconds), RJIL (0.67 seconds), and VIL (1.22 seconds).
* **Call Silence/Mute Rate (4G/5G):** Airtel (1.49), RJIL (1.99), and VIL (1.18).
* **Mean Opinion Score (MOS):** Airtel (3.95), MTNL (2.49), RJIL (3.87), and VIL (4.44).
* **Average Download Speed:** Airtel (5G/4G/2G): 114.26 Mbps, MTNL (3G/2G): 1.18 Mbps, RJIL (5G/4G): 247.99 Mbps, and VIL (5G/4G/2G): 80.70 Mbps.
* **Average Upload Speed:** Airtel (5G/4G/2G): 29.16 Mbps, MTNL (3G/2G): 0.90 Mbps, RJIL (5G/4G): 35.90 Mbps, and VIL (5G/4G/2G): 19.99 Mbps.
* **5G Data Services:** Peak download speeds reached 879.66 Mbps, and upload speeds reached 84.55 Mbps in city hotspots.
**Data performance in Hotspots (Mbps):**
* **Airtel:** 4G DL: 31.46, 4G UL: 9.77, 5G DL: 183.55, 5G UL: 44.95
* **RJIL:** 4G DL: 33.75, 4G UL: 12.82, 5G DL: 274.52, 5G UL: 46.50
* **VIL:** 4G DL: 26.89, 4G UL: 11.76, 5G DL: 115.43, 5G UL: 31.51
The assessment covered high-density neighborhoods and 9 static hotspots, including railway stations, municipal corporations, temples, beaches, and hospitals, to reflect stationary user experience. The highway route passing through Dharavi, Bandra East, Vakola, Prabhat Colony, Vile Parle, Jogeshwari East, Malad East, Metro Mall, Ahmedabad Mumbai Highway, Pelhar, Sakawar, Dhekale, Sativali, Haloli, Monor, Chilhar, Ghol, Kasa, Veti, Medhi, Dengachimet, Sakhare, Malwada, Wada, Nehroli, Khupari, Kudus, Ambadi, mahapoli, Angaon, Thane, Vikhroli, Ghatkopar and Eastern Express Highway etc.
The detailed report is available on the TRAI website: www.trai.gov.in. For clarifications, contact Shri Brajendra Kumar, Advisor RO, Bengaluru TRAI, at adv.bengalurutrai.gov.in or Tel. No. 918022865004.
Key Entities Referenced
Telecom Regulatory Authority of India: The regulatory body that conducted the Independent Drive Test (IDT) and released the findings for the Mumbai Licensed Service Area (LSA).
Mumbai City, Maharashtra: The primary geographical area where network quality assessment was performed.
Mumbai Licensed Service Area: The specific licensed area for telecom services that was the subject of the TRAI's network quality assessment.
Airtel: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
MTNL: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
RJIL: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
VIL: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
Bengaluru, Karnataka: Location of the TRAI Regional Office that supervised the drive tests.
Ministry of Communications
TRAI Assesses Network Quality Across Mumbai City
under Mumbai Licensed Service Area
Posted On: 25 JUL 2025 6:12PM by PIB Delhi
The Telecom Regulatory Authority of India (TRAI) has released its Independent Drive Test (IDT) findings
for the Mumbai Licensed Service Area (LSA), covering extensive city and highway routes during the month
of June 2025. The drive tests, conducted under the supervision of the TRAI Regional Office, Bengaluru, were
designed to capture real-world mobile network performance across diverse usage environments - urban zones,
institutional hotspots, public transport hubs, and high-speed corridors.
Between 17 to 20 June 2025, TRAI teams conducted detailed tests across Mumbai City and surrounding
areas including 243.1 Kms of City drive test, Highway drive test of 267 Kms (Mumbai- Charoti-
Kasatwadi- Vikramgad- Kalyan- Thane- Mumbai) and 09 Hot spots segments. Technologies evaluated
included 2G, 3G, 4G, and 5G, reflecting the service experience of users across multiple handset capabilities.
The findings of IDT have been intimated to all Telecom Service Providers (TSPs) concerned.
Key Parameters Assessed:
a. Voice Services: Call Setup Success Rate (CSSR), Drop Call Rate (DCR), Call Setup Time, Call Silence
Rate, Speech Quality (MOS), Coverage.
b. Data Servies: Download/Upload Throughput, Latency, Jitter, Packet Drop Rate, and Video Streaming
Delay.
The overall mobile network performance in Mumbai city is summarised below: -
Call Setup Success Rate - Airtel, MTNL, RJIL and VIL have 94.81%, 28.71%, 99.46% and 94.03%
respectively in Auto-selection mode (5G/4G/3G/2G).
Drop Call Rate - Airtel, MTNL, RJIL and VIL have value of 0.56%, 22.99%, 1.35% and 0.72% respectively
in Auto-selection mode (5G/4G/3G/2G).
5G data services also delivered peak download speeds reaching 879.66 Mbps and upload speeds touching
84.55 Mbps in city hotspots.
Performance against key QoS parameters
CSSR: Call Setup Success Rate (in %), CST: Call Setup Time (in seconds), DCR: Drop Call Rate (in %) &
MOS: Mean Opinion Score.
Summary-Voice services Summary-Data servicesData Download performance (Overall): Average
download speed of Airtel (5G/4G/2G) is 114.26 Mbps,
Call Setup Success Rate: Airtel, MTNL, RJIL and VIL
MTNL (3G/2G) is 1.18 Mbps, RJIL (5G/4G) is 247.99
have 94.81%, 28.71%, 99.46% and 94.03% call setup
Mbps and VIL (5G/4G/2G) is 80.70 Mbps.
success rate respectively in Auto-selection mode
Data Upload performance (Overall): Average upload
(5G/4G/3G/2G).
speed of Airtel (5G/4G/2G) is 29.16 Mbps, MTNL
Call Setup Time: Airtel, MTNL, RJIL & VIL have call
(3G/2G) is 0.90 Mbps, RJIL (5G/4G) is 35.90 Mbps and
setup time of 1.26, 4.40, 0.67 and 1.22 seconds
VIL (5G/4G/2G) is 19.99 Mbps.
respectively in Auto-selection mode (5G/4G/3G/2G).
Drop Call Rate: Airtel, MTNL, RJIL and VIL have
Data performance - Hotspots (in Mbps):
drop call rate of 0.56%, 22.99%, 1.35% and 0.72%
Airtel- 4G D/L: 31.46 4G U/L: 9.77
respectively in Auto-selection mode (5G/4G/3G/2G).
5G D/L: 183.55 5G U/L: 44.95
Call Silence/Mute Rate: Airtel, RJIL and VIL have
RJIL- 4G D/L: 33.75 4G U/L: 12.82
silence call rate of 1.49%, 1.99% and 1.18%
5G D/L: 274.52 5G U/L: 46.50
respectively in packet switched network (4G/5G).
VIL- 4G D/L: 26.89 4G U/L: 11.76
Mean Opinion Score (MOS): Airtel, MTNL, RJIL and
5G D/L: 115.43 5G U/L: 31.51
VIL have average MOS of 3.95, 2.49, 3.87 and 4.44
respectively.
Note- “D/L” Download speed, “U/L” Upload speed 4G
& 5G technology have not been observed in MTNL
In Mumbai, the assessment included high-density neighbourhoods like Colaba, Nearby Navy Nagar, Gateway
of India Mumbai, Charni Road, Mumbai Central, Fort, CSMT, Coastal Road, Haji Ali Sea Face, Worli,
Bandra Worli Sea Link Flyover, Marbles Line, Professor NS Phadke Road, Swami Vivekanand Road, Golibar
Road, Kalwa, Pimpalner, Kalyan, Sonar Pada, Kalyan Shilphata Road, Mumbai Agra Highway and Santacruz
Chembur Link Road etc.
TRAI also evaluated real-world conditions at 09 static hotspots—including Andheri West Local Railway
Station, Thane Collector Office, DN Nagar Metro Station, Dombivli-Kalyan Municipal Corporation, ISKCON
Temple Juhu, Juhu Beach, Kalyan Railway Station, Andheri Lokhandwala Complex, The Civil Hospital,
Thane - to reflect stationary user experience.
The Highway route, a high-speed mobility stretch Mumbai, Charoti, Kasatwadi, Vikramgad, Kalyan, Thane,
Mumbai passing through Dharavi, Bandra East, Vakola, Prabhat Colony, Vile Parle, Jogeshwari East, Malad
East, Metro Mall, Ahmedabad Mumbai Highway, Pelhar, Sakawar, Dhekale, Sativali, Haloli, Monor, Chilhar,
Ghol, Kasa, Veti, Medhi, Dengachimet, Sakhare, Malwada, Wada, Nehroli, Khupari, Kudus, Ambadi,
mahapoli, Angaon, Thane, Vikhroli, Ghatkopar and Eastern Express Highway etc., was also tested to
understand quality of service during intercity travel.
The tests were conducted using TRAI calibrated equipment and standardised protocols in real-time
environments. The detailed report is available at TRAI website www.trai.gov.in. For any
clarification/information, Shri Brajendra Kumar, Advisor (RO, Bengaluru) TRAI may be contacted on email:
adv.bengaluru@trai.gov.in or at Tel. No. +91-80-22865004.
****
Samrat/Allen
(Release ID: 2148498)