The Goodspeed app and data plans only support mobile data usage. However, it is still possible to make phone calls and send SMS messages if you wish through your own mobile service provider. If you wish to have data roaming with Goodspeed enabled, but would like to receive calls with your regular provider at the same time, you need to enable “allow cellular data switching” via Settings —> Cellular or Mobile Data. Additional charges from your own mobile service provider may apply.
Instead of calling with your mobile service provider, we recommend using services such as Whatsapp, Skype or Facebook Messenger to use your Goodspeed data plan and prevent any possible unexpected costs for calling abroad.