Czech Republic
Opensignal is the independent global standard for analyzing consumers' connectivity experiences. Our industry reports are the definitive guide to understanding what happens when people use their mobile and broadband connections in their daily life.
Czech Republic
Opensignal is the independent global standard for analyzing consumers' connectivity experiences. Our industry reports are the definitive guide to understanding what happens when people use their mobile and broadband connections in their daily life.
Key Findings
T-Mobile has the Best Network
As T-Mobile wins the following key metrics outright — Consistent Quality, Coverage Experience and Download Speed Experience — and is a joint winner for Reliability Experience alongside Vodafone, it earns the title of Best Network. In addition, T-Mobile is the most awarded operator in this report, winning 12 out of 14 awards either outright or jointly. This includes all the awards in the overall experience, 5G experience and consistency categories.
O2’s customers are able to connect to 5G in more places
O2 has replaced Vodafone as the winner of the 5G Coverage Experience award — due to a two point rise in O2’s score from that seen in the last report, while the other two operators’ scores both rose by one point. O2 wins with a score of 4.7 points on a 10-point scale, while T-Mobile and Vodafone now share second place with their identical scores of 4.6 points. 5G Coverage Experience measures the geographic 5G coverage of populated areas.
No-one has a better 5G experience than T-Mobile
T-Mobile has kept hold of both Opensignal’s awards for 5G speed — 5G Download Speed and 5G Upload Speed — from the previous report. However, while T-Mobile still is the outright winner of the overall Download Speed Experience award, it now shares Upload Speed with O2 as their scores are now statistically tied. In addition to winning both 5G speed awards outright, T-Mobile is a joint winner for the other two metrics in the 5G experience category (5G Video Experience and 5G Games Experience) alongside O2.
O2 draws level with Vodafone on 5G Availability.
Our O2 and Vodafone users now spend the highest proportion of time with an active 5G connection — given the two operators’ statistically tied scores of 20.5-21%. This is a change from the last report, when Vodafone won the 5G Availability award outright. The two operators command a lead of around three percentage points over T-Mobile’s 17.6%. 5G Availability is an important measure of the mobile experience as users can only enjoy the improved performance that 5G provides when they have a 5G connection.
Mobile Experience Awards
Market Overview
As was the case in the last report, T-Mobile is the most awarded operator. This time it wins 12 out of 14 awards either outright or jointly — including five outright wins. O2 has the next largest haul, winning eight awards, but it only wins one of these outright — 5G Coverage Experience. Vodafone is a joint winner in three categories — Availability, 5G Availability and Reliability Experience.
In October, Opensignal analysis showed that T-Mobile Czechia had the highest Consistent Quality score out of all of Deutsche Telekom Group’s European mobile operators. Vodafone Czechia placed fourth out of 10 and O2 Czechia placed fourth out of five in their respective operator groups.
O2 announced in November that it had completed the main stage of modernizing its mobile network across Czechia, upping its 5G base station count to 5,300, which it says covers 96% of the country’s population. However, the operator also noted that nearly 70% of its customers do not have 5G-capable phones, while half owned a phone with an operating system no longer supported with updates. The operator therefore ran a marketing campaign over the Christmas period to encourage users to switch to modern devices. Boosting 5G adoption works to improve the overall user experience — as users typically have a superior mobile experience when connected to 5G.
Vodafone has also been improving its network. The operator has modernized around 1,400 transmitters — or 43% of its network in the past two years, according to an update released in December 2024. It also claims to have increased its 5G population coverage to 95% up from 85%. Vodafone has also reduced its operational carbon emissions by 17% and expects to reach zero scope 1 and scope 2 emissions by 2028 instead of its originally planned date of 2030.
In this report we examine the mobile network experience of the three main mobile network operators in Czechia — T-Mobile, O2 and Vodafone — over a period of 90 days starting on October 01, 2024, and ending on December 29, 2024, to see how they fared.
Overall Experience
National Analysis
The statistical tie for first place between T-Mobile and O2, from our last report, for Video Experience remains in place. This time they share the award with scores of 70.3-71.1 points on a 100-point scale and a lead of around two points over Vodafone’s 68.8 points.
All three operators place in the Very Good (68-78) category. This indicates that our users are, on average, able to stream video at 1080p or better with satisfactory loading times and little stalling.
Video Experience scores account for adaptive bitrate streaming (ABR), a technology that allows Opensignal to accurately represent users' real video experience including video streams up to 4K quality.
Definitions
Opensignal’s Video Experience quantifies the quality of video streamed to mobile devices by measuring real-world video streams over an operator's networks. The metric is based on an International Telecommunication Union (ITU) approach, built upon detailed studies which have derived a relationship between technical parameters, including picture quality, video loading time and stall rate, with the perceived video experience as reported by real people. To calculate video experience, we are directly measuring video streams from end-user devices and using this ITU approach to quantify the overall video experience for each operator on a scale from 0 to 100. The videos tested include a mixture of resolutions — including Full HD (FHD) and 4K / Ultra HD (UHD) — and are streamed directly from the world’s largest video content providers.
In addition to Video Experience, we report on the following metrics related to video experience:
- 5G Video Experience: The average Video Experience of Opensignal users when they were connected to an operator’s 5G network.
- Video Experience – 5G Users: The average Video Experience of Opensignal users with a 5G device and a 5G subscription across an operator's networks. It factors in 2G, 3G, 4G and 5G video experience along with the availability of each technology.
- 4G Video Experience: The average Video Experience of Opensignal users on an operator's 4G network.
- 3G Video Experience: The average Video Experience of Opensignal users on an operator’s 3G network.
National Analysis
O2 is no longer the outright winner of the overall Games Experience award — it now shares the award with T-Mobile as their scores are statistically tied. The two operators win with scores of 83.3-83.7 points on a 100-point scale and a lead of around two points over Vodafone’s 81.6 points.
All three operators place in the Good (75-85) category. This means that most users deem the experience acceptable. The gameplay experience is generally controllable and the user receives immediate feedback between their actions and the outcomes in the game. Most users do not experience a delay between their actions and the game.
Definitions
Opensignal’s Games Experience measures how mobile users experience real-time multiplayer mobile gaming on an operator’s network. Measured on a scale of 0-100, it analyzes how our users’ multiplayer mobile gaming experience is affected by mobile network conditions including latency, packet loss and jitter.
Games Experience quantifies the experience when playing real-time multiplayer mobile games on mobile devices connected to servers located around the world. The approach is built on several years of research quantifying the relationship between technical network parameters and the gaming experience as reported by real mobile users. These parameters include latency (round trip time), jitter (variability of latency) and packet loss (the proportion of data packets that never reach their destination). Additionally, it considers multiple genres of multiplayer mobile games to measure the average sensitivity to network conditions. The games tested include some of the most popular real-time multiplayer mobile games (such as Fortnite, Pro Evolution Soccer and Arena of Valor) played around the world.
Calculating Games Experience starts with measuring the end-to-end experience from users’ devices to internet end-points that host real games. The score is then measured on a scale from 0 to 100.
In addition to Games Experience, we report on the following metrics related to games experience:
- 5G Games Experience: The average Games Experience of Opensignal users when they were connected to an operator’s 5G network.
- Games Experience – 5G Users: The average Games Experience of Opensignal users with a 5G device and a 5G subscription across an operator's networks. It factors in 2G, 3G, 4G and 5G games experience along with the availability of each technology.
- 4G Games Experience: The average Games Experience of Opensignal users on an operator's 4G network.
- 3G Games Experience: The average Games Experience of Opensignal users on an operator's 3G (e.g. UMTS/HSPA or CDMA 1X EV-DO) network.
National Analysis
Our T-Mobile users continue to observe the fastest overall download speeds in Czechia. This means that T-Mobile keeps hold of the Download Speed Experience award. It wins this time around with a score of 58.2Mbps and a lead of 17Mbps over second-placed O2’s 41.6Mbps. Vodafone is in last place with a score of 29.4Mbps.
T-Mobile's score has increased the most from that seen in the last report, rising by 9Mbps. O2's score has increased by 4Mbps, while Vodafone's score is statistically unchanged.
Definitions
Measured in Mbps, Download Speed Experience represents the typical everyday speeds a user experiences across an operator’s mobile data networks.
In addition to Download Speed Experience, we report on the following metrics related to download speeds:
- 5G Download Speed: The average download speed observed by Opensignal users with active 5G connections.
- Download Speed Experience – 5G Users: The average download speeds experienced by Opensignal users with a 5G device and a 5G subscription across an operator’s networks. It factors in 2G, 3G, 4G, and 5G download speeds along with the availability of each technology.
- 4G Download Speed: The average downlink speed observed by Opensignal users when they were connected to 4G.
- 3G Download Speed: The average downlink speed observed by Opensignal users when they were connected to 3G (e.g. UMTS/HSPA or CDMA 1X EV-DO).
National Analysis
T-Mobile and O2 win the Upload Speed Experience award jointly with statistically tied scores of 16.7-17.2Mbps and a lead of around 3Mbps over Vodafone’s 14.5Mbps. This is a change from the previous report, when T-Mobile won the award outright.
Definitions
Upload Speed Experience measures the average upload speeds for each operator observed by our users across their mobile data networks. Typically upload speeds are slower than download speeds, as current mobile broadband technologies focus resources on providing the best possible download speed for users consuming content on their devices. As mobile internet trends move away from downloading content to creating content and supporting real-time communications services, upload speeds are becoming more vital and new technologies are emerging that boost upstream capacity.
In addition to Upload Speed Experience, we report on five supporting metrics related to upload speeds:
- 5G Upload Speed: The average upload speed observed by Opensignal users with active 5G connections.
- Upload Speed Experience – 5G Users: The average upload speeds experienced by Opensignal users with a 5G device and a 5G subscription across an operator’s networks. It factors in 2G, 3G, 4G, and 5G upload speeds along with the availability of each technology.
- 4G Upload Speed: The average uplink speed observed by Opensignal users when they were connected to 4G.
- 3G Upload Speed: The average uplink speed observed by Opensignal users when they were connected to 3G (e.g. UMTS/HSPA or CDMA 1X EV-DO).
5G Experience
National Analysis
T-Mobile is no longer the outright winner of the 5G Video Experience award. Instead, it is a joint winner alongside O2 as the two operators’ scores are statistically tied. They win with 76.4-76.5 points on a 100-point scale and a lead of around two points over Vodafone’s 74.9 points.
All three operators place in the Very Good (68-78) category. This indicates that our users are, on average, able to stream video at 1080p or better with satisfactory loading times and little stalling when connected to 5G.
5G Video Experience scores account for adaptive bitrate streaming (ABR), a technology that allows Opensignal to accurately represent users' real video experience including video streams up to 4K quality.
Definitions
5G Video Experience quantifies the quality of mobile video experienced by Opensignal users on real-world video streams when they were connected to 5G. The metric is based on an International Telecommunication Union (ITU) approach, built upon detailed studies which have derived a relationship between technical parameters, including picture quality, video loading time and stall rate, with the perceived video experience as reported by real people. To calculate 5G Video Experience, we are directly measuring video streams from end-user devices and using this ITU approach to quantify the video experience observed by our users on each operator’s 5G network on a scale from 0 to 100. The videos tested include a mixture of resolutions — including Full HD (FHD) and 4K / Ultra HD (UHD) — and are streamed directly from the world’s largest video content providers.
National Analysis
Two operators still occupy the winners’ podium for 5G Games Experience, due to a statistical tie, but while O2 remains, O2 has replaced Vodafone as a joint winner. T-Mobile and O2 win with scores of 91-91.5 points on a 100-point scale and a lead of around one point over Vodafone’s 90 points.
All three operators place in the Excellent (85 or above) category. This means that the vast majority of users deem this 5G network experience acceptable. Nearly all users feel like they have control over the game and they receive immediate feedback on their actions. There is not a noticeable delay in almost all cases.
Definitions
5G Games Experience measures how mobile users experience real-time multiplayer mobile gaming on an operator's 5G network. It analyzes how our users’ multiplayer mobile gaming experience was affected by mobile network conditions including latency, packet loss and jitter. 5G Games Experience for each operator is calculated on a scale from 0 to 100.
5G Games Experience quantifies the experience when playing real-time multiplayer mobile games on mobile devices connected to servers located around the world. The approach is built on several years of research quantifying the relationship between technical network parameters and the gaming experience as reported by real mobile users. These parameters include latency (round trip time), jitter (variability of latency) and packet loss (the proportion of data packets that never reach their destination). Additionally, it considers multiple genres of multiplayer mobile games to measure the average sensitivity to network conditions. The games tested include some of the most popular real-time multiplayer mobile games (such as Fortnite, Pro Evolution Soccer and Arena of Valor) played around the world. Calculating 5G Games Experience starts with measuring the end-to-end experience from users’ devices to internet end-points that host real games.
National Analysis
Our T-Mobile users continue to see the fastest average 5G download speeds in Czechia. As a result T-Mobile is still the outright winner of the 5G Download Speed award. It wins this time with a score of 130.1Mbps and a lead of 34Mbps over second-placed O2’s 95.8Mbps. Vodafone comes third with a score of 61.6Mbps.
Definitions
5G Download Speed shows the average download speed experienced by Opensignal users across an operator’s 5G network. 5G Download Speed for each operator is calculated in Mbps (Megabits per second).
National Analysis
T-Mobile is once again the outright winner of the 5G Upload Speed award. It wins this time around with a score of 38.2Mbps and a lead of 8Mbps over second-placed O2’s 30.7Mbps. Vodafone is in last place with a score of 25.5Mbps.
Definitions
5G Upload Speed measures the average upload speeds experienced by Opensignal users across an operator’s 5G network. 5G Upload Speed for each operator is calculated in Mbps (Megabits per second).
Coverage
National Analysis
T-Mobile holds onto the Coverage Experience award, winning it this time with a score of 9.8 points on a 10-point scale, giving it a narrow lead over second-placed O2’s 9.7 points. Vodafone is last with a score of 9.4 points.
All three operators’ scores have risen very slightly compared to those in seen in the last report.
Definitions
The Opensignal Coverage Experience metric measures the extent of mobile networks in the places people live, work and travel. The metric represents the experience users receive as they travel around areas where they would reasonably expect to find coverage.
Traditional coverage metrics typically estimate either a percentage of land area covered, or a percentage of population covered; often neither will be an accurate measurement of the true user expectation and experience. In many markets there are areas where neither population density nor geographic area reflect the importance of coverage to users. For example, in a large mountain range most users will not expect coverage in the wilderness, but poor coverage in the relatively small area of a ski resort is critical for the enjoyment of a holiday. Estimates based purely on population give undue significance to coverage in the most densely populated areas.
Coverage Experience measures geographic coverage of populated areas and therefore more accurately reflects the coverage expectations and experience of typical users. It can give a result that is somewhat different to traditional estimates based on either geographic or population measures. The metric uses a scale from 0 to 10.
National Analysis
O2 is the new winner of the 5G Coverage Experience award — a change from the last report, when Vodafone was in first place. O2 wins with a score of 4.7 points on a 10-point scale, while T-Mobile and Vodafone now share second place with their identical scores of 4.6 points.
O2's score has increased by two points from that seen in the previous report, while T-Mobile’s and Vodafone’s scores have both risen by one point.
Definitions
The Opensignal Coverage Experience metric measures the extent of mobile networks in the places people live, work and travel. The metric represents the experience users receive as they travel around areas where they would reasonably expect to find coverage.
Traditional coverage metrics typically estimate either a percentage of land area covered, or a percentage of population covered; often neither will be an accurate measurement of the true user expectation and experience. In many markets there are areas where neither population density nor geographic area reflect the importance of coverage to users. For example, in a large mountain range most users will not expect coverage in the wilderness, but poor coverage in the relatively small area of a ski resort is critical for the enjoyment of a holiday. Estimates based purely on population give undue significance to coverage in the most densely populated areas.
Coverage Experience measures geographic coverage of populated areas and therefore more accurately reflects the coverage expectations and experience of typical users. It can give a result that is somewhat different to traditional estimates based on either geographic or population measures. The metric uses a scale from 0 to 10.
5G Coverage Experience shows the proportion of places Opensignal users with a 5G device and a 5G subscription had an active 5G connection.
National Analysis
All three Spanish operators share the Availability award with statistically tied scores of 95.4-95.8%. This is a change from the previous report, when the award was shared between T-Mobile and O2.
Definitions
Our availability metrics are not a measure of a network’s geographical extent. They won’t tell you whether you are likely to get a signal if you plan to visit a remote rural or nearly uninhabited region. Instead, they measure what proportion of time people have a network connection, in the places they most commonly frequent — something often missed by traditional coverage metrics. Looking at when users have a connection rather than where, provides us with a more precise reflection of the true user experience.
We also keep track of the instances that leave mobile users most frustrated: when there is no signal to connect to at all. The most common dead zones users struggle with occur indoors. As most of our availability data is collected indoors (as that’s where users spend most of their time), we’re particularly astute at detecting areas of zero signal.
Our availability metrics take a user-centric, time-based approach that complements the user-centric and geographical-based methodology used by our reach metrics.
Availability shows the proportion of time all Opensignal users on an operator’s network had either a 3G, 4G or 5G connection.
National Analysis
O2 and Vodafone are joint winners of the 5G Availability award. This is a change from the last report, when Vodafone won the award outright. The two operators win with statistically tied scores of 20.5-21% and a lead of around three percentage points over T-Mobile’s 17.6%.
Definitions
Our availability metrics are not a measure of a network’s geographical extent. They won’t tell you whether you are likely to get a signal if you plan to visit a remote rural or nearly uninhabited region. Instead, they measure what proportion of time people have a network connection, in the places they most commonly frequent — something often missed by traditional coverage metrics. Looking at when users have a connection rather than where, provides us with a more precise reflection of the true user experience.
We also keep track of the instances that leave mobile users most frustrated: when there is no signal to connect to at all. The most common dead zones users struggle with occur indoors. As most of our availability data is collected indoors (as that’s where users spend most of their time), we’re particularly astute at detecting areas of zero signal.
Our availability metrics take a user-centric, time-based approach that complements the user-centric and geographical-based methodology used by our reach metrics.
5G Availability shows the proportion of time Opensignal users with a 5G device and a 5G subscription had an active 5G connection.
Consistency
National Analysis
T-Mobile is once again the outright winner of the Consistent Quality award. It wins this time around with a score of 86.9% and a lead of around seven percentage points over O2 and Vodafone, which share second place with their identical scores of 80%.
O2's score has increased by six percentage points. Vodafone's score has increased by two percentage points. T-Mobile's score has decreased by two percentage points.
This metric measures if the network is sufficient to support common mobile application requirements at a level that is ‘good enough’ for users to maintain (or complete) various typical demanding tasks on their devices. It assesses a number of experience indicators such as download speed, upload speed, latency, jitter, packet loss, and time to first byte.
Definitions
Consistent Quality measures if the network is sufficient to support common mobile application requirements at a level that is ‘good enough’ for users to maintain (or complete) various typical tasks on their devices.
We combine different experience indicators such as download speed, upload speed, latency, jitter, packet discard, and time to first byte to calculate Consistent Quality. These components are evaluated against thresholds recommended by various more demanding common applications used for a range of common tasks.
To calculate the metric value, the proportion of tests that pass the requirements of Consistent Quality is multiplied by the test success ratio, which is the proportion of completed tests to all tests conducted. Tests that pass indicate that activities such as video calling, uploading an image to social media, or using smart home applications will be possible without noticeable lag or slowdown.
National Analysis
T-Mobile and Vodafone share the Reliability Experience award with statistically tied scores of 931-932 points on a 100-1000 point scale and a lead of around 42 points over O2’s 889 points.
Opensignal’s Reliability Experience measures the ability of our users to connect to and successfully complete (basic) tasks on operators’ networks. It consists of the following components:
% time connected — The proportion of time Opensignal users can successfully connect to a mobile network
Data Connectivity — the proportion of time when the network is available and the device can connect to the internet
Task completion — whether tasks initiated by the user’s device are completed
Sufficiency — The probability that (basic) tasks will be executed sufficiently well for the user
Definitions
Opensignal’s Reliability Experience measures the ability of Opensignal users to connect to and successfully complete (basic) tasks on communication service providers’ (CSP) networks. It analyzes how much Opensignal users’ experience is affected by the radio access and core network, along with issues that prevent them from connecting to the internet even if they have a connection to their CSP’s network. It also factors in users’ ability to successfully use lower performance applications including SD video, over-the-top voice calls and web browsing.
Related Analysis
Our Methodology
Collecting billions of individual measurements daily from over 100 million devices globally, Opensignal independently analyzes mobile and broadband user experience on every major network operator around the globe.
About Opensignal
Opensignal is the leading global provider of independent insights into consumers' connectivity experiences and choice of carrier. Our proprietary insights into mobile and broadband networks give operators the solutions they need to profitably compete and win, from executive level scorecards and public validation to pin-point level engineering analytics and consumer decision dynamics.
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Confidence Intervals
For every metric we calculate statistical confidence intervals indicated on our graphs. When confidence intervals overlap, our measured results are too close to declare a winner. In those cases, we show a statistical draw. For this reason, some metrics have multiple operator winners.
In our bar graphs we represent confidence intervals as boundaries on either sides of graph bars.
In our supporting-metric charts we show confidence intervals as +/- numerical values.
Why confidence intervals are vital in analyzing mobile network experience