After Warsaw and the Łódź Voivodeship, the RFBENCHMARK team set out to another region of Poland to examine the quality and speed of mobile Internet. For several months now, experts have been conducting mobile network and cellular service measurements using the Drive Test methodology. This time, their radar focused on the Greater Poland Voivodeship.

As in previous locations, a set of 14 devices was used to test the mobile networks in Greater Poland. Among them were Samsung S24 Ultra smartphones, which enabled measurements in various locations and usage scenarios. In addition, advanced signal quality analysis while in motion was carried out using specialized PCTEL meters – GFlex and IBFlex. The use of diverse equipment made it possible to obtain precise results and objectively compare network performance across different technologies.

The study evaluated Poland’s four major mobile operators: Orange, Play, T-Mobile, and Plus. Specialized equipment assessed them against several key indicators. These included both voice calls and data transmission. Voice tests assessed VoLTE call quality and WhatsApp call performance, focusing on connection setup time, stability, and audio quality. For 5G data transmission, download and upload speeds were measured in 10-second windows, network delays were tested using pings and the TWAMP protocol (including latency, jitter, and packet loss), and video streaming quality was analyzed based on startup speed, playback smoothness, and buffering.

Mobile Internet Speed in Greater Poland Voivodeship

One of the most important aspects of the measurements in Greater Poland was the quality of 5G data transmission services, with a focus on 10-second measurements of download and upload speeds. The study examined file transfer efficiency via the HTTP protocol and overall data transfer performance.

File Transfer Success Rate – Download and Upload

In the data transmission quality tests in Greater Poland, Play achieved the highest file transfer success rates – 99.47% for downloads and 99.66% for uploads. Orange came in second with strong results as well: 98.68% for downloads and 98.56% for uploads. T-Mobile delivered solid download results (98.28%) but slightly weaker upload performance (96.51%). Plus had the lowest scores – 97.45% for downloads and 97.77% for uploads.

Download and Upload Speeds

When it comes to data transmission speed, T-Mobile was the clear leader in download performance, achieving 337.45 Mbps. Play followed with 318.77 Mbps, then Orange with 233.92 Mbps. Plus had the slowest average download speed at 162.31 Mbps. For uploads, Play led again with 78.68 Mbps, while Plus recorded the lowest upload speed at 53.24 Mbps.

Latency

Network latency tests, using 10 PING packets of 32 bytes (based on Ookla’s methodology), showed that Play had the lowest average response time (RTT – Round Trip Time) at 34 ms.

Other operators followed: T-Mobile at 42 ms, Plus at 44 ms, and Orange with the highest latency at 45 ms. While these differences are not drastic, they can be noticeable for latency-sensitive applications where every millisecond counts.

Voice Call Quality in Greater Poland Voivodeship (2025)

VoLTE

Analyzing VoLTE call test results, T-Mobile had the highest successful call setup rate at 99.53%, followed closely by Orange and Play, both at 99.35%. Plus recorded the lowest – though still very high – at 98.93%.

In terms of call stability (Call Drop Rate), Plus performed best, with the lowest rate of dropped calls at 0.86%. T-Mobile had a similar result at 0.89%, while Play had the highest drop rate at 1.50%.

When assessing voice quality through the average MOS (Mean Opinion Score), Play led with 4.49, slightly ahead of T-Mobile (4.46) and Orange (4.43). Plus had the lowest average voice quality at 4.25. Furthermore, Play had the lowest percentage of very poor quality calls (MOS < 1.6) – just 0.93%, whereas Orange had the highest at 2.16%.

		KPI Free Mode Voice - VoLTE
Measured parameter	Orange	T-Mobile	Play	Plus
Call Setup Success Rate (%)	99,35%	99,53%	99,35%	98,93%
Call Drop Rate (%)	1,00%	0,89%	1,50%	0,86%
Audio Quality MOS Average	4,43	4,46	4,49	4,25
Audio quality MOS < 1.6 (%)	2,16%	1,63%	0,93%	1,84%

gOTT Whatsapp 

Voice call tests conducted via WhatsApp (gOTT) in Greater Poland show good overall performance, albeit with some differences. Play achieved the highest call setup success rate at 99.38%, followed by Orange (99.34%) and Plus (99.27%). T-Mobile had the lowest score in this category, yet still respectable at 98.72%.

Regarding call stability (dropped call rate), Orange performed best at 0.98%, while Plus had the most issues, with 1.71%. Play and T-Mobile scored 1.15% and 1.28%, respectively.

In terms of voice quality (average MOS score), Play again came out on top with a score of 4.02, confirming its strength in call quality via messaging apps. Orange and Plus both scored 3.94, and T-Mobile slightly lower at 3.91. Notably, Play had the lowest share of very poor-quality calls (MOS < 1.6) – just 0.73%, while T-Mobile had the highest at 1.66%.

		KPI Free Mode Voice - gOTT Whatsapp
Measured parameter	Orange	T-Mobile	Play	Plus
Call Setup Success Rate (%)	99,34%	98,72%	99,38%	99,27%
Call Drop Rate (%)	0,98%	1,28%	1,15%	1,71%
Audio Quality MOS Average	3,94	3,91	4,02	3,94
Audio quality MOS < 1.6 (%)	1,59%	1,66%	0,73%	1,35%

KPI NR/FreeMode Data – TWAMP

In data transmission tests using the TWAMP protocol, which evaluates connection quality for interactive services (like video conferencing or online gaming), Play achieved the highest success rate at an impressive 99.74%. Plus (98.94%) and Orange (98.84%) also performed very well. T-Mobile scored significantly lower at 91.48%, which may suggest connection quality issues in certain areas or conditions.

In terms of the Interactivity Score – a measure of user experience for latency-sensitive services – Plus led with 69 points. Play followed closely with 66, confirming its strong network quality. T-Mobile scored 62, while Orange came in last with 52 points.

		KPI NR/FreeMode Data - TWAMP
Measured parameter	Orange	T-Mobile	Play	Plus
TWAMP Success Rate (%)	98,84%	91,48%	99,74%	98,94%
TWAMP Interactivity Score	52	62	66	69

KPI NR/FreeMode Data – Streaming

An analysis of the 4K video streaming test in static conditions (4K Streaming STATIC) in Greater Poland showed that Plus had the highest success rate for playback start at 97.53%. The other networks had very similar results: Orange – 96.97%, Play – 96.96%, and T-Mobile – 96.45%.

Regarding video streaming quality, measured by the VSQI Session MOS (Mean Opinion Score), Play led again with a score of 4.37. Orange and T-Mobile followed with 4.31 and 4.25, respectively. Plus had the weakest performance at 4.04.

These differences were also reflected in the percentage of sessions with lower quality (MOS < 3.8). Once again, Play performed best – only 9.27% of sessions had reduced quality. Orange and T-Mobile fared worse – 11.38% and 13.24%, respectively, while Plus had the highest share of poor-quality streaming sessions at 19.47%.

		KPI NR/FreeMode Data - Streaming
Measured parameter	Orange	T-Mobile	Play	Plus
Streaming Success Rate (%)	96,97%	96,45%	96,96%	97,53%
VSQI Session MOS	4,31	4,25	4,37	4,04
VSQI Session MOS < 3.8 (%)	11,38%	13,24%	9,27%	19,47%

Photo by Komarov Egor 🇺🇦 on Unsplash