maczugaplok right I get it now, I wasn't sure if you were playing online games and if you are moving around a lot and I thought it might be a WiFi drop and it goes to 3G which also eats the battery. But now that I understand your problem yea I think there should be an option for 2G only which I think other phones from other brands still have I think...
I don't really understand your question.
All I am asking for is a '2G only' toggle, because there are some people that do not care about mobile data transfer and are always on WiFi, and with weak mobile network coverage you end up with phone toggling between 2G/3G constantly, with each switch causing some battery drain. Since 2G is still a thing in Europe (not really usable for browsing and media, but enough for calls and messages), having such toggle is a huge battery saver.