If you use Skype, or indeed anything else, on a limited data plan, and exceed your data allowance, I believe you will be charged a great deal extra for it. I'm on pay-as-you-go myself, so am no expert. Whether they would actually cut off your mobile data altogether I don't know. I don't think that Skype would fail to work because your data allowance was such-and-such.
Is it possible that your mobile data signal is not strong enough?
Posted via Android Central App