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Chunghwa Telecom
Chunghwa Telecom Co., Ltd.
Taiwan's largest mobile network operator, with extensive coverage and stable network quality, particularly strong in 4G/5G.
Chunghwa Telecom network coverage across Taiwan as of 2026
Chunghwa Telecom Co., Ltd. operates as Taiwan's largest integrated telecom service provider, serving 13.24 million mobile subscribers with a 37.8% market share, a 96/100 coverage score, and a median 5G download speed of 344.25 Mbps as of H1 2025.
Taiwan's largest integrated telecom service provider Chunghwa Telecom Co., Ltd. (TWSE: 2412 | NYSE: CHT) delivers mobile, fixed-line, broadband, and ICT services to 13.24 million mobile subscribers, commanding a 37.8% mobile market share and generating a historic NT$236.11 billion (USD $7.11 billion) in revenue for full-year 2025, according to RCR Wireless News, January 2026.
Chunghwa Telecom earns the top position in Taiwan's mobile market by winning 13 of 16 possible awards in Opensignal's December 2025 report, leading all competitors in 5G download speed at 344.25 Mbps and holding the lowest multi-server latency at 23 ms, according to Ookla Speedtest Connectivity Report Taiwan H1 2025.
This review covers Chunghwa Telecom's 4G and 5G network coverage across Taiwan's 22 counties, speed test benchmarks for Taipei, Taichung, and Kaohsiung, customer service channels, eSIM support, international roaming, and a head-to-head competitor comparison against Far EasTone and Taiwan Mobile.
Explore Far EasTone's full carrier review and Taiwan Mobile's network analysis for additional mobile carrier options in Taiwan.
Chunghwa Telecom covers Taiwan's 22 counties and 368 townships with 4G LTE service, including outlying islands such as Penghu, Kinmen, Matsu, Xiaoliuqiu, Green Island, and Orchid Island. The carrier achieves a coverage score of 96/100, the highest of any operator in Taiwan, according to SimFinder Taiwan SIM Plans Report, March 2026.
The network extends to high-altitude and rural zones including Yushan and Hehuanshan mountain areas, delivering 4G LTE signal where competing carriers record gaps, according to SAMENA Council, October 2025. Urban centers including Taipei, Taichung, and Kaohsiung receive full 5G coverage with stable signal maintained even inside high-speed rail tunnels cutting through Taiwan's central mountain range.
Chunghwa Telecom deploys 4G LTE across all 368 townships in Taiwan and operates 5G on both the 3.5 GHz and 28 GHz spectrum bands, holding the largest 5G spectrum share among all Taiwanese operators as of end-2025, according to Matrix BCG Competitive Landscape Report, March 2026.
The 4G network expanded coverage in October 2025 with the addition of the 900 MHz frequency band, improving penetration in rural areas, basement locations, and mountainous terrain. The 5G rollout covers Taiwan's major metropolitan areas with a median 5G download speed of 344.25 Mbps — 31.6% faster than Far EasTone and 54.1% faster than Taiwan Mobile — based on Ookla Speedtest Intelligence data, H1 2025.
The strongest 5G signal concentrations appear in three metropolitan zones: Taipei (including New Taipei City), Taichung City, and Kaohsiung City, where 5G availability overlaps directly with Chunghwa's densest base station infrastructure.
Chunghwa Telecom delivers a median overall download speed of 136.2 Mbps and a median upload speed of 17.93 Mbps across all network technologies combined in Taiwan, leading all local operators in both metrics, according to Ookla Speedtest Connectivity Report Taiwan H1 2025.
Location | Download (Mbps) | Upload (Mbps) | Source |
|---|---|---|---|
Taipei (5G) | 344.25 | 34.52 | Ookla H1 2025 |
Taichung (All Tech Combined) | 165.3 | 17.93 | SimFinder March 2026 |
Kaohsiung (5G Average) | 305.6 | 30.4 | Opensignal Feb–May 2025 |
Chunghwa Telecom speed test results across Taiwan's major cities — H1 2025
Learn more about 5G network performance in Taiwan for detailed technical comparisons across all three major operators.
Chunghwa Telecom Co., Ltd. was founded on June 15, 1996 as part of Taiwan's government telecommunications privatization program and is headquartered at 21-3 Xinyi Road, Section 1, Taipei 10048, Taiwan, according to Wikipedia – Chunghwa Telecom.
The company trades on two major exchanges: TWSE under ticker 2412 and NYSE under ticker CHT, with a market capitalization of NT$1.055 trillion. Chunghwa employs 32,383 staff as of December 2023, operating the most extensive fixed-line last-mile infrastructure in Taiwan — controlling over 90% of that network — alongside 13.24 million mobile subscribers as of December 31, 2025, according to Chunghwa Telecom Unaudited Consolidated Report, February 2026.
Full-year 2025 consolidated revenue reached NT$236.11 billion (USD $7.11 billion), a 2.7% year-over-year increase, with operating income rising 3.6% to NT$48.55 billion and net income attributable to shareholders growing 4.0% to NT$38.69 billion — the strongest financial performance in company history.
Chunghwa Telecom operates a 24-hour customer service hotline reachable at 0800-080-123 (toll-free from Chunghwa lines) or by dialing 123 directly from any Chunghwa mobile device. International callers reach support at +886-800-080-928, available around the clock for both monthly plan and prepaid subscribers, according to Chunghwa Telecom Official Call Line page.
Phone Support (Monthly Plans): 0800-080-123 or mobile short code 123 — Available 24 hours a day, 7 days a week (GMT+8)
Phone Support (Prepaid Plans): 0800-080-928 or mobile short code 928 — Available 24 hours a day, 7 days a week (GMT+8)
International Support Line: +886-800-080-928 — Available 24 hours a day with charges applied for international calls
Physical Stores: Service centers located across all 22 counties in Taiwan, including major locations in Taipei, Taichung, and Kaohsiung, with airport counters at Taoyuan International Airport (Terminal 1 and Terminal 2)
In-App Support: Available through the MyCHT app with account management, billing inquiry, and support ticketing — rated 2.3 stars on Google Play based on user reviews
Email and Online Support: Accessible through cht.com.tw with service forms available in both Traditional Chinese and English
Customer service operates primarily in Traditional Chinese, with English support available at tourist-facing locations including airport counters and select Taipei city stores. International visitors report that English-language assistance at airport locations carries a 20–30% location premium on plan pricing, according to Truely eSIM Chunghwa Telecom Review, October 2025.
Chunghwa Telecom customer service contact channels and availability hours
Compare customer service options across all major Taiwan carriers in the comprehensive Taiwan carrier support comparison guide.
Chunghwa Telecom provides these value-added services for subscribers:
International Roaming: Available in 50+ countries across Asia, Europe, the Americas, and Oceania, at daily rates of NT$180–NT$1,350 (USD $6–$45) per destination; roaming activation and package selection is available directly through the MyCHT mobile app, according to Truely eSIM Review, October 2025
eSIM Support: Chunghwa Telecom offers eSIM for both domestic monthly plan subscribers and tourist prepaid users; activation requires scanning a QR code on a compatible iOS or Android device, with purchase available online, at airport counters, and at retail stores; troubleshooting support is provided at 0800-080-123 and 0800-080-928, according to Chunghwa Telecom eSIM Setup Guide
MyCHT Mobile App Features: The app provides data usage tracking and real-time consumption alerts, bill payment and invoice management, plan upgrade and downgrade requests, international roaming package selection and activation, customer support ticketing and chat, and CHT Wi-Fi hotspot access management
CHT Wi-Fi Hotspots: eSIM and prepaid plan subscribers receive free access to CHT's nationwide Wi-Fi hotspot network, covering airports, MRT stations, and shopping centers
ICT Enterprise Services: IDC and cloud services, cybersecurity solutions, and big data projects form a growing revenue segment, with double-digit growth in IDC and cloud achieved in 2025, according to RCR Wireless News, January 2026
FTTx Broadband: Fixed broadband subscriber count reached 3.93 million as of December 2025, with 1.73 million customers on packages of 300 Mbps or higher — a 13.3% year-over-year increase
Chunghwa Telecom MyCHT mobile app interface and key features
Discover more about eSIM activation in Taiwan for a step-by-step guide to connecting on Chunghwa Telecom's network instantly.
Chunghwa Telecom key advantages and disadvantages at a glance
Fastest 5G Network In Taiwan: Median 5G download speed of 344.25 Mbps leads all Taiwanese operators — 31.6% faster than Far EasTone and 54.1% faster than Taiwan Mobile — according to Ookla Speedtest Intelligence H1 2025
Widest Geographic Coverage: 4G LTE signal reaches all 368 townships across Taiwan's 22 counties and 6 outlying island groups including Penghu, Kinmen, Matsu, Xiaoliuqiu, Green Island, and Orchid Island, with a coverage score of 96/100, according to SimFinder March 2026
Award-Leading Network Reliability: Chunghwa Telecom won 13 of 16 possible Opensignal awards in December 2025, including 10 outright wins across availability, speed, gaming, voice, and video experience categories
Strongest 5G Spectrum Position: Chunghwa holds the largest 5G spectrum allocation in Taiwan across both the 3.5 GHz and 28 GHz bands as of end-2025, providing superior capacity and lower per-unit data costs compared to all local competitors, according to Matrix BCG Competitive Landscape Report March 2026
Premium Airport Pricing: Taoyuan International Airport counters charge 20–30% above city-store prices for the same eSIM and SIM plans, targeting international tourists, according to Truely eSIM Review October 2025
Primarily Chinese-Language Support: Customer service operates predominantly in Traditional Chinese, with English-language assistance limited to tourist-facing airport locations and select Taipei service centers
International Roaming Costs: Daily international roaming rates of USD $6–$45 per destination quickly exceed the cost of local SIM cards or global eSIM providers in countries such as Japan, South Korea, and Hong Kong, according to Truely eSIM Review October 2025
MyCHT App Usability Issues: The MyCHT Android app receives negative user reviews on Google Play, with users citing a complex interface and difficulty completing account management tasks independently
Taiwan's mobile market operates as a three-operator competitive landscape: Chunghwa Telecom, Far EasTone Telecommunications, and Taiwan Mobile Co., Ltd. Chunghwa leads in performance and geographic coverage, while Far EasTone holds the highest 5G availability score and Taiwan Mobile competes primarily on consumer pricing and bundled content.
Feature | Chunghwa Telecom | ||
|---|---|---|---|
Coverage Score | 96/100 | 94/100 | 93/100 |
Median 5G Download Speed | 344.25 Mbps | 261.17 Mbps | 223.38 Mbps |
Median 5G Upload Speed | 34.52 Mbps | 28.92 Mbps | N/A (trailing) |
5G Latency | 23 ms | N/A | N/A |
Mobile Subscribers | 13.24M | ~7.5M | ~7.9M |
Market Share | 37.8% | ~22% | ~23% |
Opensignal Awards (Dec 2025) | 13 of 16 | N/A | N/A |
5G Spectrum Bands | 3.5 GHz and 28 GHz | 3.5 GHz | 3.5 GHz |
Taiwan carrier performance comparison — Chunghwa Telecom, Far EasTone, and Taiwan Mobile (H1 2025)
Chunghwa Telecom is the strongest choice when network reliability, 5G speed, and island-wide geographic reach are the primary requirements. Far EasTone delivers broader 5G availability in terms of geographic footprint. Taiwan Mobile suits subscribers who prioritize bundled entertainment services and competitive consumer plan pricing.
Read the detailed Chunghwa Telecom vs Far EasTone comparison or explore Taiwan Mobile's full network review for alternative options.
Chunghwa Telecom operates 5G across Taiwan on the 3.5 GHz and 28 GHz spectrum bands, covering all major metropolitan areas and holding the largest 5G spectrum share in the country as of end-2025. The carrier recorded the highest median 5G download speed in Taiwan at 344.25 Mbps — outperforming Far EasTone at 261.17 Mbps and Taiwan Mobile at 223.38 Mbps — with the lowest 5G latency at 23 ms, according to Ookla Speedtest Intelligence H1 2025.
Chunghwa Telecom delivers a median overall download speed of 136.2 Mbps and median upload speed of 17.93 Mbps across all network technologies in Taiwan. On 5G specifically, the median download speed reaches 344.25 Mbps with an upload speed of 34.52 Mbps and multi-server latency of 23 ms, making it the fastest mobile operator in Taiwan for H1 2025, according to Ookla Speedtest Connectivity Report Taiwan H1 2025. The overall quality score stands at 91/100, the highest in SimFinder's global carrier database entry for Taiwan as of March 2026.
Chunghwa Telecom provides 4G LTE coverage across all 22 counties and 368 townships in Taiwan, including remote mountain regions and 6 outlying island groups. Covered islands include Penghu, Kinmen, Matsu, Xiaoliuqiu, Green Island, and Orchid Island, as well as high-altitude areas such as Yushan and Hehuanshan. The carrier achieves a coverage score of 96/100, according to SimFinder March 2026, and expanded 4G reach further in October 2025 by adding the 900 MHz frequency band for improved penetration in rural and low-signal environments.
Chunghwa Telecom's 24-hour customer service hotline for monthly plan subscribers is 0800-080-123, accessible toll-free from Chunghwa lines or by dialing 123 from any Chunghwa mobile device. Prepaid subscribers dial 0800-080-928 or the short code 928. International callers reach support at +886-800-080-928 (charges apply). In-person support is available at service stores across all 22 counties and at Taoyuan International Airport counters at Terminal 1 and Terminal 2, according to the Chunghwa Telecom official website.
Chunghwa Telecom supports eSIM for both domestic monthly plan subscribers and tourist prepaid users, with activation completed by scanning a QR code on a compatible iOS or Android device. eSIM plans include a local Taiwan phone number, data allocation, and free access to CHT Wi-Fi hotspots. Purchase is available online at cht.com.tw, at Taoyuan Airport counters, and at retail stores. Technical support for eSIM activation is available at 0800-080-123 for monthly plan users and 0800-080-928 for prepaid users, according to the Chunghwa Telecom eSIM Setup Guide.
Chunghwa Telecom international roaming covers 50+ countries across Asia, Europe, the Americas, and Oceania, with daily roaming rates ranging from USD $6 to USD $45 depending on destination. Roaming packages are selectable and activatable directly through the MyCHT mobile app before or during travel. For frequent multi-country travelers, these daily rates typically exceed costs of local SIM cards in destinations such as Japan, South Korea, and Hong Kong, according to Truely eSIM Chunghwa Telecom Review, October 2025.
Chunghwa Telecom outperforms Far EasTone on every speed and reliability metric: 344.25 Mbps median 5G download speed versus Far EasTone's 261.17 Mbps, and a coverage score of 96/100 versus Far EasTone's 94/100. Far EasTone leads in 5G geographic availability — the proportion of time users can connect to a 5G signal — but this broader availability does not translate into faster speeds, as Chunghwa's performance advantage remains 31.6% on 5G download and 19.4% on 5G upload, according to Ookla Speedtest Intelligence H1 2025.
Chunghwa Telecom's strongest feature is its island-wide 4G and 5G network coverage, reaching all 368 townships — including outlying islands and mountain zones — with a 96/100 coverage score and the fastest 5G speeds in Taiwan at 344.25 Mbps. This combination of total geographic reach and leading performance earned Chunghwa Telecom 13 of 16 possible Opensignal awards in December 2025 and the Ookla Best Mobile Network and Best 5G Network titles for H1 2025 in Taiwan.
Chunghwa Telecom Co., Ltd. is Taiwan's best mobile network for users who prioritize speed, reliability, and full geographic coverage — backed by a 344.25 Mbps 5G median, a 96/100 coverage score, and 13 Opensignal awards in 2025.
Explore more mobile carrier options through the complete Taiwan carrier directory or learn how to choose the right Taiwan carrier for your needs.
Last Updated: April 10, 2026
Sources:
Ookla Speedtest Intelligence, Taiwan Speedtest Connectivity Report H1 2025, September 2025
Opensignal, Taiwan Mobile Network Experience Report, December 2025
RCR Wireless News, Chunghwa Telecom Posts Record Revenue and Profits in 2025, January 2026
Matrix BCG, Competitive Landscape of Chunghwa Telecom, March 2026
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