The over way around is also annoying: what if you have a limited connection but you are on WiFi? Say, you share from another phone using hotspot feature. Some

The over way around is also annoying: what if you have a limited connection but you are on WiFi? Say, you share from another phone using hotspot feature. Some tools allow to control this, but others will update the shit out of your mobile plan as soon as it can see wifi. On the other hand I mostly like how roaming was solved in Android phones I had. It allowed me to choose which apps can use it and constantly monitored current usage of each.