The telecom operator MegaFon conducted an analysis of more than 100 smartphone models operating in Russian networks and recorded systemic technical flaws that reduce the actual data transfer speed.
According to the document reviewed by TASS, 68% of the tested devices showed low throughput in 3G and 4G networks, and 65% of the devices are unable to correctly combine signals from several base stations into a single channel. The cause is cited as errors in the implementation of Carrier Aggregation. Both problems lead to the actual connection speed being lower than the technical capabilities of the operator's infrastructure.
Additionally, 40% of smartphones experience difficulties with automatic network connection due to incorrectly configured access points. In 25% of models, deviations in the guaranteed data transfer rate are observed — the connection is unstable and does not maintain the declared threshold.
MegaFon does not disclose the manufacturers or the country of origin of the devices, but notes that the problems are widespread and affect most popular brands present on the market.