Greece
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.
Greece
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
Nova users have the most reliable mobile experience
Nova is the outright winner of Opensignal’s new Reliability Experience award. It wins with a score of 879 points on a 100-1000 point scale and a lead of nine points over second-placed Cosmote’s 870 points. Opensignal’s Reliability Experience measures the ability of our users to connect to and successfully complete (basic) tasks on operators’ networks.
Cosmote’s customers are able to get a connection in the most places
Cosmote continues to be the outright winner of both the Coverage Experience and 5G Coverage Experience awards. This means our Cosmote users observe the best overall and 5G geographical coverage in populated areas. Cosmote wins Coverage Experience with a score of 8.3 points on a 10-point scale and a lead of one point over second-placed Vodafone. For 5G Coverage Experience, Cosmote scores 4.8 points, giving it a lead of two points over Vodafone.
Nova users have the best experience when playing multiplayer mobile games on 5G connections
As was the case in the last report, Nova is the outright winner of the 5G Games Experience award. It wins this time with a score of 79.2 points on a 100-point scale and a lead of two points over second-placed Cosmote’s 77.4 points. However, Cosmote is now the outright winner of the overall Games Experience award, a change from the last report, when it was shared between Cosmote and Nova.
Cosmote users see the fastest average speeds in Greece
Cosmote is the outright winner across all four of Opensignal’s speed awards: Download Speed Experience, Upload Speed Experience, 5G Download Speed and 5G Upload Speed. This means that our Cosmote users observe the fastest overall average speeds and the fastest average speeds when connected to 5G. Cosmote wins the Download Speed Experience award with a score of 63.2Mbps and a lead of 22Mbps over second-placed Vodafone’s 41.5Mbps.
The best overall Video Experience is with Cosmote
Our Cosmote users have the best overall experience when streaming on-demand mobile videos over cellular connections. Cosmote wins this time with a score of 70.1 points on a 100-point scale and a lead of around three points over Vodafone’s and Nova’s statistically tied scores of 66.8-67.4 points. Cosmote is also a joint winner for 5G Video Experience alongside Vodafone.
Mobile Experience Awards
Market Overview
This time, Cosmote dominates the award table to a remarkable degree; of the 14 awards up for the taking, there are only two which it doesn’t win either outright or jointly. The exceptions are Reliability Experience and 5G Games Experience, both of which Nova wins.
In June 2024, Cosmote commercially launched its 5G standalone access (SA) network, branding it as 5G+. Cosmote claims that it will offer faster download and upload speeds, reduced latency and better battery management. SA enables operators to provide users with differentiated connectivity through network slicing. For example, someone could pay to have their connection or app prioritized during a large event, like a concert.
Greece has shut down its 3G networks, but as we’ve recently reported our Greek users spend the second highest amount of time on 2G in Europe, after Luxembourg. Reducing the use of 2G networks would help improve the mobile experience given the low speeds seen on 2G compared to more recent generations of mobile technology. However, it is harder to switch 2G off once 3G is gone because then there would be no ability for old devices that are not voice over LTE (VoLTE) compatible to make calls. In addition, legacy IoT devices will need to be upgraded or replaced before 2G is switched off.
In this report we examine the mobile network experience of the three main mobile network operators in Greece — Cosmote, Vodafone and Nova — 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
As was the case last time around, our Cosmote users enjoy the best available overall experience when streaming on-demand video over cellular connections. Cosmote therefore retains the Video Experience award. It wins this time with a score of 70.1 points on a 100-point scale and a lead of around three points over Vodafone’s and Nova’s statistically tied scores of 66.8-67.4 points.
Cosmote places in the Very Good (68-78) category, while Vodafone and Nova place one category lower, in Good (58-68).
A Very Good (68-78) rating means that our users are, on average, able to stream video at 1080p or better with satisfactory loading times and little stalling. A Good (58-68) rating means that our users are, on average, able to stream video at 720p 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
Cosmote is the new outright winner of the Games Experience award — a change from the previous report, when it shared the award with Nova due to a statistical tie. Cosmote wins with a score of 72 points on a 100-point scale and a lead of two points over second-placed Nova’s 70 points. Vodafone comes third with a score of 68.9 points.
All operators place in the Fair (65-75) category. This means that users find the experience to be ‘average’. In most cases the game is responsive to the actions of the player with most users feeling like they have control over the game. The majority of players notice a delay between their actions and the outcomes in 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 Cosmote users continue to see the fastest overall average download speeds in Greece. Cosmote therefore remains the outright winner of the Download Speed Experience award. It does so this time around with a score of 63.2Mbps and a lead of 22Mbps over second-placed Vodafone’s 41.5Mbps. Nova comes third with a score of 36.8Mbps.
All three operators’ scores have improved compared to those seen in the last report. Cosmote's score has increased the most, rising by 13Mbps. Vodafone is next with a rise of 6Mbps. Nova's score has increased by 3Mbps.
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
As was the case in the last report, Cosmote is the outright winner of the Upload Speed Experience award. It wins this time with a score of 12.7Mbps and a lead of 2Mbps over second-placed Vodafone’s 10.6Mbps. Nova places last with a score of 9Mbps.
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
Cosmote and Vodafone are joint winners of the 5G Video Experience award with statistically tied scores of 76.2-76.5 points on a 100-point scale and a lead of around one point over Nova’s 75.4 points. This is a change from the last report, when all three operators shared the award.
All 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.
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
Once again, our Nova users have the best experience when playing multiplayer mobile games over 5G connections. Nova therefore remains the outright winner of the 5G Games Experience award. It does so this time with a score of 79.2 points on a 100-point scale and a lead of two points over second-placed Cosmote’s 77.4 points. Vodafone comes third with a score of 76 points.
All 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
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 Cosmote users continue to see the fastest average 5G download speeds in Greece. As a result, Cosmote retains the 5G Download Speed award. It wins this time around with a score of 187.7Mbps and a lead of 67Mbps over second-placed Vodafone’s 120.7Mbps. Nova is in last place with a score of 115.3Mbps.
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
Cosmote is the new winner of the 5G Upload Speed award, replacing Vodafone. Cosmote wins with a score of 23.3Mbps and a lead of 1Mbps over second-placed Vodafone’s 21.9Mbps. Nova comes third with a score of 19.5Mbps.
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
Once again, Cosmote is the outright winner of the Coverage Experience award. It does so this time with a score of 8.3 points on a 10-point scale and a lead of one point over second-placed Vodafone’s 7.4 points. Nova is in last place with a score of 6.3 points.
All three operators’ scores have increased by less than a point compared to those seen in the previous 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
Our Cosmote users continue to be able to connect to 5G in more places than those with other operators. As a result, Cosmote keeps hold of the 5G Coverage Experience award. It wins with a score of 4.8 points on a 10-point scale and a lead of two points over second-placed Vodafone’s 2.9 points. Nova comes third with a score of 2.2 points.
All three operators’ scores have risen by one point compared to those 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.
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
Cosmote and Vodafone win the Availability award jointly with statistically tied scores of 95.9-96.3% and a lead of around two percentage points over Nova’s 94.1%. This is a change from the last report, when all three operators shared the award.
Both Cosmote's and Vodafone’s scores have increased by one percentage point from those seen in the last report, while Nova's score hasn't changed by a statistically significant amount.
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
Our Cosmote 5G users continue to spend the greatest proportion of time with an active 5G connection. As a result, Cosmote remains the outright winner of the 5G Availability award. It does so with a score of 24.9% and a lead of eight percentage points over second-placed Vodafone’s 17.1%. Nova places last with a score of 13%.
All three operators’ scores are up from those seen last time around. Cosmote's score has increased the most, rising by seven percentage points. Vodafone is next with a rise of six percentage points, while Nova's score has improved the least — an increase of three percentage points.
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
As was the case in the previous report, Cosmote is the outright winner of the Consistent Quality award. It does so this time around with a score of 76.2% and a lead of five percentage points over second-placed Nova’s 71.6%. Vodafone is in last place with a score of 66.9%.
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
Nova wins the Reliability Experience award outright with a score of 879 points on a 100-1000 point scale and a lead of nine points over second-placed Cosmote’s 870 points. Vodafone comes third with a score of 823 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