The Office of Electronic Communications conducted tests on the quality of data transmission in GSM 900/1800 and UMTS networks of mobile operators: P4, PTC, PTK Centertel and Polkomtel in the territory of 16 province capitals.
The measurements were carried out between 4 p.m. and 8 p.m for four mobile operators at the same time. For the aim of the tests pre-paid SIM cards intended for data transmission were used.
The measurements were conducted in a mobile mode (access to services was monitored) as well as in a fixed mode of 5 locations chosen at random within the city borders with the points selected in a manner ensuring similar signal levels for each of the operators.
During the tests the statistics on the amount of realized and not realized sessions were carried out. The test protocol included information on the effectiveness and speed of web pages opening, effectiveness of downloading and uploading e-mails form an e-mail server as well as the effectiveness, speed and duration of downloading test files from the FTP server. The results of tests were presented on the histograms with division into individual services and operators in specific localisations presented on the maps. Detailed data from the tests concerning individual province cities are included in the attachments to the Report.
During the data transmission tests in mobile networks in total there were 5625 calls made in the network of “ERA” operator, 5184 calls made in the network of “ORANGE” operator, 5776 calls made in the network of “PLAY” operator and 5654 calls made in the network of “PLUS” operator.
The best result in mobile and fixed tests was reached by the operator of the "PLAY" network.
The network of this operator registered the lowest number of unsuccessful measurement sessions, web pages were opening at the fastest rate as well as files from the FTP server were downloaded and e-mails sent in the most efficient way. It may be concluded that the “PLAY” network operator was the most effective in delivering its services among other operators. This was most visible in mobile tests. In fixed tests the difference between operators was not so significant.
A very similar result in quality of data transmission services was reached by the operator of the "PLUS" network.
In its network web pages also were opening very fast, moreover both in mobile and fixed tests the operator reached the highest data transmission speed while downloading files from the FTP server.
The worst result in mobile and fixed tests was reached by the operator of the "ORANGE" network.
Although this operator reached similar efficiency in the delivery of measurement sessions to the “PLAY” network operator, however web pages were opening at the slowest rate from all four operators. Downloading files from the FTP was also at one of the lowest speeds.