Wirelessly posted (The Dacia Sandero of data plan)
There isn't an indicator if and when they charge you for data -- only thing would be trial and error. By honestly, if you are using wifi only you shouldn't be charged for anything.
If you are worried though, you can turn off "mobile network" (cell service), but keep wifi on. That should eliminate any doubt, and you don't have to take the sim card out. |