@Yasin 7
This problem still remains and it is mind-blowing that there is so little actual information on it.
Using mobile data("active", mobile data enabled, WiFi not connected): Mobile Network battery consumed 5-10% over 24 hours
Not using mobile data ("standby", mobile data enabled but WiFi connected): Mobile Network battery consumed 30-50% over 24 hours.
How the heck can the *"standby"* mode for Mobile Network consume five times *more* battery than the "active" mode? This is a clear indication that there is still something seriously wrong with the way adaptive connectivity is handled!
[Tested on recently factory reset device, post June update, with both Adaptive connectivity turned off and on].