Mobile device users who have already managed to get the update to Android 8.0 Oreo have begun to complain about the first bugs in the operation of the operating system from Google. Thus, on Reddit there was a message about the constant use of mobile Internet on the smartphone, even if the Wi-Fi connection is active.Of course, in connection with the constant use of mobile Internet increases the power consumption of the gadget. Nevertheless, it is much more unpleasant to see high traffic consumption even in places where Wi-Fi is working. It is reported that Google specialists are already aware of the problem and are working on a solution. Meanwhile, all those who have faced the above inconvenience, it is recommended to independently disable mobile Internet when connecting to Wi-Fi. This solution cannot be called convenient and we can only hope that Google will release a fix in the near future.