Roaming: what to do to ensure that holidays abroad do not turn into a cost trap?

Since June 15, 2017, there are theoretically no more roaming charges in the European Union. EU citizens should also be able to make calls, send text messages and surf the Internet abroad without additional costs. However, there are some exceptions that need to be considered before the next summer vacation is just around the corner. The OÖN answer the most important questions.