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Viettel
Viettel Mobile
Vietnam's largest mobile network operator, with the best coverage in rural and mountainous areas, has a revenue of $11.5 billion.
V/ettel Mobile network coverage across Vietnam's 34 provinces as of 2026
Viettel Mobile leads Vietnam's telecom market with 98% 4G population coverage, 5G median download speeds of 594.16 Mbps, and 56.2% mobile subscriber market share. This review covers network performance, customer service, app features, roaming, and head-to-head comparisons with MobiFone and Vinaphone.
Vietnam's largest mobile network operator Viettel Telecom — the consumer-facing brand of state-owned Viettel Group (full legal name: Tập đoàn Công nghiệp – Viễn thông Quân đội) — holds 56.2% of Vietnam's mobile subscriber market share, operates 30,000 5G base stations nationwide, and serves more than 12.6 million 5G subscribers as of late 2025, according to reporting by Qdnd.vn published March 2026.
Viettel Mobile delivers the strongest overall network performance in Vietnam for subscribers who prioritize coverage depth, 5G availability, and digital self-service. Ookla's Vietnam Speedtest Connectivity Report H1 2025 ranked Viettel as both the best mobile network and best 5G network in the country, recording a 5G median download speed of 594.16 Mbps — the highest among all domestic carriers.
This review examines Viettel's 4G and 5G coverage percentages, speed test results across Hanoi, Ho Chi Minh City, and Da Nang, customer service channels and contact hours, My Viettel app features, international roaming reach across 158 countries, eSIM support, and a side-by-side competitive comparison with MobiFone and Vinaphone. Readers gain a factual, data-backed basis for evaluating whether Viettel fits their connectivity needs in 2026.
Compare MobiFone's full network review and Vinaphone's carrier profile for additional mobile carrier options in Vietnam.
Viettel covers 98% of Vietnam's population with 4G LTE service and operates 30,000 5G base stations across all 34 provincial capitals. The carrier targets full 4G population equivalence with its legacy 2G footprint by 2025, according to the Ministry of Information and Communications (MIC) citing network buildout data published November 2024. 5G coverage currently reaches 95% of provincial capitals, according to Vietnam News published January 2025.
Urban centres including Hanoi, Ho Chi Minh City, Da Nang, Hai Phong, and Can Tho receive the densest signal with both 4G and 5G concurrently active. Rural and mountainous provinces in the Northwest Highlands and Central Highlands benefit from Viettel's military-heritage infrastructure mandate, giving the carrier measurably broader rural reach than civilian-only operators. Viettel's 4G stations represent approximately 40% of all 4G base stations across Vietnam, according to Vietnam Net published November 2024.
Viettel's 4G network operates on LTE Band 3 (1800 MHz) and Band 28 (700 MHz), while its 5G network uses the n78 (3500 MHz) mid-band spectrum acquired through the B1 frequency band auction in 2024. The 700 MHz band provides rural and in-building penetration, and the 3500 MHz 5G band delivers peak throughput in dense urban grids.
By the end of 2025, Viettel deployed 23,500 new 5G stations, bringing the national total to 30,000 and advancing Vietnam's 2030 nationwide 5G coverage goal ahead of schedule, according to Qdnd.vn published March 2026. The carrier's 5G network now serves 12.6 million active subscribers, the largest 5G subscriber base among Vietnamese operators.
Provinces with the strongest combined 4G and 5G signal depth include Hanoi, Ho Chi Minh City, Da Nang, Binh Duong, and Dong Nai — Vietnam's five most economically active urban and industrial zones.
Viettel delivers a 5G median download speed of 594.16 Mbps and an overall mobile median download speed of 165.03 Mbps across Vietnam, according to the Ookla Vietnam Speedtest Connectivity Report H1 2025, published July 2025. For 5G upload, Viettel recorded 106 Mbps in July 2025 — the highest among all Vietnamese carriers — according to CAND published August 2025.
Location | Download (Mbps) | Upload (Mbps) | Network | Source |
|---|---|---|---|---|
Hanoi | 165.03 (median all-band) | ~45.00 | 4G + 5G | Ookla H1 2025 |
Ho Chi Minh City | 594.16 (5G median) | 106.00 | 5G | Ookla H1 2025 / CAND Aug 2025 |
Da Nang | 136.64 (5G benchmark) | 27.24 | 5G | SpeedChecker Insights Sep 2025 |
Viettel Mobile 5G speed comparison versus MobiFone and Vinaphone — Vietnam major cities, H1–Q3 2025
Learn more about 5G network performance and frequency bands in Vietnam for detailed technical comparisons across all licensed operators.
Viettel operates 6 primary customer service channels with AI-augmented contact centre technology that increased agent processing productivity by 30% and reduced customer handling time by 10%. Viettel Customer Service Company (VCX) won the Silver Award at the International Customer Experience Awards (ICXA) 2025 in the Best Contact Centre category — the first Vietnamese enterprise to receive this recognition — according to Tuoi Tre News published November 2025.
Hotline Phone Support: 18008098 (toll-free, 24 hours a day, 7 days a week) for mobile subscribers across all Vietnamese provinces
Live AI Chatbot and Human Chat: Available 24/7 via the My Viettel app and vietteltelecom.vn, with AI Callbot handling first-contact resolution and routing to agents for complex cases
Physical Stores: Over 2,500 Viettel Store locations across all 34 provinces, including flagship branches in Hanoi (Hoàn Kiếm), Ho Chi Minh City (Bến Nghé), and Da Nang (Hải Châu)
My Viettel App In-App Support: Ticket submission and live chat integrated into the app, rated 4.4 stars from 472,000 ratings on the iOS App Store and 4.3 stars from 5,700 ratings on the Vietnam App Store, as of 2025
Email and Online Portal: cskh@viettel.com.vn with a standard response window of 24–48 hours for billing and technical enquiries
Social Media Support: Official Facebook page (facebook.com/vietteltelecom) and Zalo OA channel with monitored response during 7:00 AM – 10:00 PM (ICT, UTC+7)
Viettel Mobile customer service contact channels and availability hours
Compare customer service ratings and channel availability in our Vietnam carrier customer support comparison guide.
Viettel Mobile provides these value-added services and digital features for all active subscribers:
International Roaming — 158 Countries and Territories: Data roaming packages cover destinations across Asia (Japan, South Korea, Singapore, Thailand, Indonesia, and Philippines), Europe (France, Germany, United Kingdom, Italy, and Spain), the Americas (United States, Canada, Mexico, Brazil, and Peru), and Africa (Mozambique, Tanzania, South Africa, Nigeria, and Kenya), according to viettelnet.vn updated November 2025
My Viettel App — 7 Core Features: Account balance and data usage monitoring in real time, mobile data and voice plan purchase and upgrade, bill payment via bank transfer and e-wallets (MoMo, ZaloPay, and VNPay), loyalty points tracking and gift redemption, in-app customer support ticket submission, Viettel Store locator with navigation, and usage history with itemised call and data logs
eSIM Support: Viettel supports eSIM activation for domestic subscribers and operates a dedicated Tourist eSIM program for international visitors, activatable upon arrival at major airports including Noi Bai (Hanoi), Tan Son Nhat (Ho Chi Minh City), and Da Nang International Airport, according to vietteltelecom.vn published October 2025
Rewards Program — Viettel++: Subscribers earn points on every recharge, data pack purchase, and My Viettel app transaction; points redeem for free data bundles, call time, device discounts at Viettel Store, and third-party vouchers from Shopee, Tiki, and Grab
Family and Multi-Line Plans: Shared data pools for up to 5 lines under one account, with each additional line receiving a discounted base monthly rate and access to the primary account's Viettel++ points balance
5G Device Support: Viettel's n78 (3500 MHz) 5G network is compatible with devices including Samsung Galaxy S25 series, iPhone 16 series, Xiaomi 14 series, OPPO Find X8, and all flagship Android handsets with 5G Sub-6 GHz radios sold in Vietnam since 2023
Discover more about eSIM activation steps for Viettel and other Vietnamese carriers for tourists and new residents.
Widest 4G Population Coverage In Vietnam: 98% 4G population reach across all 34 provinces, with 40% of Vietnam's total 4G base station infrastructure operated by Viettel alone, according to MIC data published November 2024
Fastest 5G Network Nationally: 5G median download speed of 594.16 Mbps — 88.5% faster than MobiFone's 315 Mbps and 173% faster than Vinaphone's benchmark — ranked best mobile and best 5G network by Ookla H1 2025
Largest 5G Infrastructure Footprint: 30,000 5G base stations as of late 2025 — the most extensive 5G network in Vietnam — serving 12.6 million 5G subscribers, according to Qdnd.vn published March 2026
Award-Winning Customer Contact Centre: Silver Award at ICXA 2025 (Best Contact Centre), with AI-driven 30% productivity increase and 10% reduction in average handling time, according to Tuoi Tre News published November 2025
Broadest International Roaming Reach: Data and voice roaming across 158 countries and territories — the widest international coverage among Vietnamese domestic carriers — including all ASEAN markets, major European economies, and nine African markets
My Viettel App Lacks Full English Interface: Most app screens, eKYC verification prompts, OTP payment instructions, and support menus are Vietnamese-only, creating friction for expatriates and international visitors, as noted across multiple App Store reviews published 2025
5G Speed Consistency Below Network Peak: SpeedChecker's September 2025 Vietnam 5G benchmark recorded Viettel at 136.64 Mbps median 5G download — lower than MobiFone's 221.95 Mbps and Vinaphone's 217.94 Mbps in that specific test set — indicating variability between peak and median 5G throughput depending on congestion and location
Limited Trustpilot Feedback Volume: Only 14 Trustpilot reviews for viettel.com.vn as of August 2025 — a statistically thin international feedback base compared to global carriers — with qualitative complaints focused on SIM registration and number-portability processes
Vietnam's mobile market is dominated by three state-affiliated operators — Viettel, Vinaphone (VNPT Group), and MobiFone — that together control approximately 85% of all mobile subscribers, according to Market Report Analytics published January 2026. Viettel holds 56.2% mobile subscriber market share, Vinaphone (VNPT) holds approximately 30%, and MobiFone holds approximately 15%, according to the same source.
Each carrier occupies a distinct performance tier: Viettel leads on 5G infrastructure scale and 4G coverage breadth, Vinaphone competes on Ookla Speedtest Connectivity Score (83.60 as of January 2026, per Baodautu.vn), and MobiFone differentiates through urban 5G speed consistency in specific test environments.
Feature | Viettel Mobile | ||
|---|---|---|---|
4G Population Coverage | 98% | ~90% | ~88% |
5G Base Stations | 30,000 | ~9,000 | ~8,500 |
5G Median Download Speed | 594.16 Mbps | 221.95 Mbps | 217.94 Mbps |
Mobile Subscribers (Market Share) | 56.2% | ~15% | ~30% |
International Roaming Countries | 158 | ~100+ | ~80+ |
eSIM Support | Yes (incl. Tourist eSIM) | Yes | Yes |
My App iOS Rating | 4.4 / 5 (472K reviews) | 4.2 / 5 | 4.1 / 5 |
Viettel Mobile versus MobiFone and Vinaphone — key performance metrics comparison, 2025–2026
Viettel is the strongest choice for subscribers prioritising maximum coverage and 5G speed potential. MobiFone suits urban users in Hanoi and Ho Chi Minh City who prioritise consistent mid-range 5G speeds, and Vinaphone suits users who prioritise Ookla Speedtest Score-based connectivity benchmarks.
Read the detailed Viettel vs MobiFone head-to-head comparison or explore the Vinaphone full carrier review for alternative coverage and plan analysis.
Viettel Mobile operates 30,000 5G base stations across Vietnam, covering 95% of all 34 provincial capitals as of late 2025. The network runs on n78 (3500 MHz) mid-band spectrum acquired in the 2024 B1 frequency auction. Viettel serves 12.6 million 5G subscribers — the largest 5G user base among Vietnamese carriers — and recorded a 5G median download speed of 594.16 Mbps in H1 2025, according to Ookla's Vietnam Speedtest Connectivity Report published July 2025.
Viettel Mobile delivers a 5G median download speed of 594.16 Mbps and an overall mobile median download speed of 165.03 Mbps across Vietnam. 5G upload speed reached 106 Mbps in July 2025 — the highest recorded among all Vietnamese operators. SpeedChecker's September 2025 Vietnam benchmark recorded Viettel at 136.64 Mbps median 5G download in a nationwide multi-city sample of 5,678 measurements, according to SpeedChecker Insights published September 2025.
Viettel Mobile's 4G LTE network covers 98% of Vietnam's population across all 34 provinces and municipalities. 5G service is active across 95% of provincial capitals, including Hanoi, Ho Chi Minh City, Da Nang, Hai Phong, Can Tho, Bien Hoa, Hue, Nha Trang, Buon Ma Thuot, and Vinh. Rural and mountainous coverage in the Northwest Highlands and Central Highlands is stronger on Viettel than on MobiFone and Vinaphone due to Viettel's state-mandated infrastructure rollout obligations, according to MIC network data published November 2024.
Viettel Mobile customer service is available 24 hours a day, 7 days a week via toll-free hotline 18008098. Additional contact channels include in-app live chat and ticket submission through the My Viettel app, email at cskh@viettel.com.vn, Zalo OA and Facebook messenger monitored from 7:00 AM to 10:00 PM (ICT), and walk-in service at more than 2,500 Viettel Store locations across all 34 provinces. Viettel's AI Callbot handles first-contact resolution and routes escalations to human agents, reducing average handling time by 10%, according to ICXA 2025 evaluation data cited by Tuoi Tre published November 2025.
Viettel Mobile supports eSIM for both domestic subscribers and international visitors through its Tourist eSIM program. Tourist eSIMs activate upon arrival in Vietnam at Noi Bai International Airport, Tan Son Nhat International Airport, and Da Nang International Airport. Domestic eSIM activation processes through the My Viettel app or at any Viettel Store with a valid national ID card or passport, according to vietteltelecom.vn published October 2025.
Viettel Mobile roaming covers 158 countries and territories across Asia, Europe, the Americas, and Africa. Data roaming packages include ASEAN-regional bundles for Laos, Cambodia, Thailand, Malaysia, Singapore, Indonesia, and the Philippines; 48-country data packs at 150,000 VND for 3 GB over 3 days; and per-destination packages for China, Japan, South Korea, the United States, France, Germany, the United Kingdom, Australia, and New Zealand, according to viettelnet.vn updated November 2025.
Viettel Mobile outperforms MobiFone on 5G infrastructure scale, 4G population coverage breadth, subscriber base, and international roaming reach, while MobiFone records higher median 5G speeds in specific multi-city speed benchmarks. Viettel holds 56.2% market share versus MobiFone's approximately 15%; operates 30,000 5G stations versus MobiFone's approximately 9,000; and covers 158 roaming countries versus MobiFone's approximately 100+. SpeedChecker's September 2025 benchmark recorded MobiFone at 221.95 Mbps median 5G download versus Viettel's 136.64 Mbps in that specific nationwide sample of 5,678 Viettel measurements and 2,970 MobiFone measurements.
Viettel Mobile's best feature is its national 5G network scale — 30,000 base stations covering 95% of provincial capitals — delivering a 5G median peak download speed of 594.16 Mbps, the fastest recorded among Vietnamese carriers. The combination of deepest rural 4G penetration (98% population coverage), widest international roaming footprint (158 countries), and a 4.4-star My Viettel app with 472,000 iOS ratings makes Viettel the most comprehensively capable domestic carrier for both urban and rural Vietnamese subscribers in 2026.
Viettel Mobile is Vietnam's best carrier for coverage depth, 5G infrastructure scale, and roaming reach — the definitive choice for subscribers across urban and rural Vietnam who prioritise network reliability in 2026. Visit Viettel's official website to compare current plans and activate your SIM or eSIM.
Explore more mobile carrier options through our complete Vietnam carrier directory or learn how to choose the right mobile carrier for your needs in Vietnam.
Last Updated: March 9, 2026
Sources:
Ookla Vietnam Speedtest Connectivity Report H1 2025, published via Tinhte.vn, November 2025
SpeedChecker Insights — Vietnam 5G MNO Speed Benchmark, September 2025
Qdnd.vn — Viettel 2025 Annual Performance Report, March 2026
Vietnam News — Viettel 5G Network Infrastructure Report, January 2025
Doanh Nghiep Hoi Nhap — Viettel 56.2% Mobile Subscriber Market Share, August 2024
Viettel Telecom Official Website — Plans, eSIM, and Store Locator
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