A landmark report from Opensignal, the independent global standard for mobile network analysis, has declared AIS the definitive leader in Thailand’s 5G landscape. In its June 2025 “5G Experience Report,” AIS captured an impressive six out of seven outright awards, demonstrating comprehensive superiority in speed, gaming, coverage, and quality. However, the market remains intensely competitive, with DTAC achieving a significant, strategic victory in the crucial 5G Video Experience category. These results arrive at a pivotal moment for the industry, set against the backdrop of the transformative True-DTAC merger and a highly anticipated spectrum auction poised to reshape the nation’s digital future.
Bangkok, Thailand – In an era where robust 5G connectivity forms the very backbone of Thailand’s digital economy and its ambitious “Thailand 4.0” vision, the performance of the nation’s mobile networks has never been more critical. From enabling smart factories in the Eastern Economic Corridor (EEC) to supporting a thriving ecosystem of digital nomads, content creators, and everyday mobile users, the quality of 5G service is a direct indicator of national competitive advantage. Providing a clear and unbiased lens on this critical sector, Opensignal has released its latest, in-depth “Thailand 5G Experience Report” for June 2025, offering a definitive analysis based on millions of measurements collected from real-world users across the country over a 90-day period from February 1 to May 1, 2025.
The report paints a clear picture of a market with a formidable front-runner. AIS has emerged with a near-total victory, cementing its position as the premier 5G provider in Thailand. The operator’s strategic investments in network infrastructure and spectrum have translated into a superior user experience across almost every metric measured, resulting in an extraordinary win of six out of seven key 5G awards. This comprehensive triumph underscores a significant gap in performance in several core areas. Yet, the narrative is not one of a total monopoly on excellence.
In a surprising and noteworthy development, DTAC managed to clinch the highly coveted award for 5G Video Experience, demonstrating that focused network optimization can yield winning results in the most popular user activities. This dynamic unfolds as the market continues to navigate the complexities of the historic merger between True and DTAC, a consolidation that promises a new competitive landscape, while all operators brace for the upcoming multi-band spectrum auction that will undoubtedly define the next chapter of 5G development in the Kingdom.
At the heart of the report’s findings is AIS’s overwhelming success, a testament to a network that delivers not only exceptional speed but also unparalleled consistency and responsiveness. The operator’s command began with the most fundamental metrics of network performance: speed. AIS was the undisputed winner of both the 5G Download Speed and 5G Upload Speed awards. Users on the AIS network experienced an average 5G download speed of a remarkable 105.3 Mbps, placing it significantly ahead of DTAC at 90.1 Mbps and TrueMove H at 84.3 Mbps.
This substantial lead translates into tangible benefits for consumers, enabling faster downloads of large files, seamless streaming of high-resolution content, and quicker application updates. On the other side of the equation, AIS also dominated in 5G Upload Speed with a score of 22.4 Mbps, far surpassing TrueMove H’s 15.8 Mbps and DTAC’s 14.4 Mbps. In today’s creator-driven economy, this superior upload capability is crucial for live-streaming, posting high-quality videos to social media, and efficient remote working, making AIS the network of choice for users who frequently share content.
Beyond raw speed, the quality of experience during specific, high-demand activities also set AIS apart from its competitors. In the rapidly growing world of mobile gaming, AIS secured the 5G Games Experience award with a score of 82.3 out of 100. This score, which analyzes factors like latency, packet loss, and jitter, indicates a smooth, responsive, and lag-free experience, which is critical for real-time multiplayer and competitive esports. This gave AIS a clear edge over DTAC (80.5) and TrueMove H (80.1). Similarly, for everyday communication, AIS provided the best 5G Voice App Experience, scoring 82.8 points. This reflects superior quality and clarity for calls made over popular OTT services like LINE, WhatsApp, and Facebook Messenger, ensuring reliable connections for both personal and professional conversations.
A fast and responsive network is only useful if users can connect to it consistently, and it is in the areas of reach and reliability that AIS’s dominance was further solidified. The report shows AIS winning outright in both 5G Availability and 5G Coverage Experience. Our AIS 5G users were connected to an active 5G signal 38.8% of the time, a figure that has impressively improved by nine percentage points since the last report. This gives AIS a commanding lead of over six percentage points against both DTAC and TrueMove H, who were statistically tied at 32.1%. This means AIS customers enjoy the benefits of 5G more frequently throughout their day. This was complemented by the win in 5G Coverage Experience, which assesses the geographic extent of 5G where people live and work, confirming the breadth of AIS’s network rollout.
Perhaps the most telling indicator of overall network superiority was AIS’s landslide victory in the 5G Consistent Quality category. AIS triumphed with a score of 84.6%, beating DTAC’s 73.6% by a massive 11-percentage-point margin. This metric is arguably the most holistic measure of network performance, as it assesses whether the network is sufficient to support the requirements of common, demanding applications. It evaluates multiple components, including download and upload speed, latency, jitter, and packet loss, against thresholds needed for tasks like group HD video calls, cloud gaming, and using smart home applications. AIS’s high score indicates that its users experience a reliable and high-performing network far more consistently than its rivals. This strength was even more pronounced in the nation’s capital, where AIS’s 5G Consistent Quality score in Bangkok Metropolis reached an impressive 86.9%, demonstrating exceptional service in the country’s economic hub.
While AIS’s dominance was extensive, the report revealed a fascinating and strategic victory for one of its key rivals. DTAC emerged as the new winner of the 5G Video Experience award, marking a significant shift in the landscape. With a score of 73.1 points, DTAC overtook last year’s winner, AIS (71.1), and also beat TrueMove H (71.0). This victory is particularly noteworthy given that video streaming accounts for the largest share of mobile data traffic globally. It suggests that DTAC has successfully optimized its network to provide a superior experience for this specific, high-demand activity, resulting in faster loading times, less buffering, and better picture quality for its users. This achievement highlights that even in a market with a clear overall leader, targeted strategies can lead to success in critical areas of the user experience.
The performance of the individual brands occurs within the context of a seismic shift in the Thai telecommunications market: the recent merger of True and DTAC. While TrueMove H did not secure any 5G awards in this report, this should be viewed through the lens of the ongoing, complex process of network integration. Melding the infrastructure of two massive operators is a monumental task that can temporarily impact performance metrics. However, the long-term potential of the combined entity is immense. The new company reported 93% nationwide 5G coverage as of February 2025 and has set an ambitious goal of expanding its footprint to 98% by the end of 2026. The eventual synergy of their combined spectrum holdings and cell sites could create a formidable challenger capable of altering the competitive dynamics presented in this current report.
Looking ahead, the next major battleground that will define the future of 5G in Thailand is imminent. The National Broadcasting and Telecommunications Commission (NBTC) is set to hold a crucial multi-band spectrum auction on June 29, 2025. This auction will release 450MHz of valuable spectrum across seven bands, including the key 2100MHz and 2300MHz bands, which are vital for expanding 5G capacity and reach. The outcome of this auction will be a pivotal moment for all operators. For AIS, it is an opportunity to acquire more resources to cement its leadership. For the newly formed True-DTAC entity, it is a critical chance to secure the spectrum needed to realize their nationwide coverage ambitions and mount a stronger challenge. The results of this multi-billion-baht battle will directly influence network development strategies and shape the quality of 5G service for Thai consumers for the next decade.
In conclusion, the latest Opensignal report provides a comprehensive and data-driven snapshot of a dynamic Thai 5G market. It confirms AIS’s current position as the undisputed leader, delivering a superior and remarkably consistent experience across a wide array of metrics. At the same time, it highlights DTAC’s ability to carve out a strategic win in the vital area of video streaming and acknowledges the transitional-yet-potential-filled state of the newly merged True-DTAC entity. With a transformative spectrum auction on the horizon, the current standings are but one chapter in an evolving story. The intense competition, fueled by strategic investments and the race for spectrum, ultimately promises a brighter digital future for Thailand, driving innovation and delivering ever-improving connectivity for its citizens and businesses.
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