Stiftung Warentest: Telecom best net, o2 forms the backlight

Stiftung Warentest Netztest – In a test conducted by Stiftung Warentest between February and April 2017, Telekom had the best mobile network. Vodafone followed in second place, the final shot was o2.

Foundation Warentest Netztest

Between February and April 2017, Stiftung Warentest investigated mobile telephony networks such as Telekom, Vodafone and O2, and it looked into the quality of the network. The result: the Telekom drove the test, in second place followed Vodafone. O2 performed worst, but showed significant improvements compared to the last test of 2015.

The o2 network showed weaknesses especially in the telephoning and surfing outside of cities. A 20 megabyte file needed an average of almost 22 seconds at o2. With Vodafone the process lasted only 13 seconds, with the Telekom only 8 seconds. YouTube videos were streamed in full-HD in almost 90 percent of the cases, with Vodafone taking place in about 80 percent of the cases. In the o2 network, however, this was only 56 percent.

Telekom has the best networks

The Stadtwerke gradient at o2 explains the Stiftung Warentest that the network operator is lagging behind in the expansion with LTE. “It is true that since the 2015 test, all three networks have significantly increased LTE capacity […], but the distances between them have remained almost the same,” it says. “In the O 2 network, in the current measurements outside cities, not much more than half of the connections ran via LTE; In cities, the provider nevertheless made 90 percent. ”

The problems were also noticeable in the language connections. Thanks to VoLTE, many customers are already phoning over the LTE network and benefit from shorter call set-up times and better voice quality. At Vodafone and the Telekom, customers had to wait an average of seven seconds on the telephone line for a telephone call.

Voice quality has improved in all networks

The telephony has become noticeably better in all three networks, the test revealed. “Operators are increasingly using new encoding methods, known as” HD Voice “or” HD Telephony “, explains the Warentest classification. “Here, too, there is a catch: HD telephony so far reliably only works within a network. According to their own opinion, the providers work to enable the technology also for conversations between different networks: ”

The entire test is published in issue 06/2017 of the magazine “test” and can be viewed online.
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