Roaming is automatically activated 30 days after activation of your O2 prepaid SIM card. You will have O2 Eurotarif by default.
To change your roaming tariff call the Roaming help line at *30, or go to My O2 Web Self-care.
Petr, who has a Czech O2 number, is on a trip in Germany. He calls his mom back in the Czech Republic. Petr pays the price charged by his roaming tariff (e.g. with O2 Eurotarif he will pay CZK 17.40 for a 2-minute call from Germany to CR). Receiving the call is free for Petr's mom.
If Petr’s mom calls him back, she will pay the same price as for ordinary calls to the O2 network in Czech Republic. Petr pays the rate charged on his roaming tariff.
Petr is on a trip in Germany, and he calls his friend Thomas, who has a German mobile. Petr pays the rate charged on his roaming tariff (e.g. with O2 Eurotarif he will pay CZK 17.40 for a 2-minute call in Germany).
If Thomas calls Petr, Petr will pay for the incoming call according to his roaming tariff (e.g. CZK 4.60 for 2 minutes call with O2 Eurotarif).
Marie, who has a Czech O2 number, is in the Czech Republic. She calls her German friend Thomas. Marie pays the rate charged by O2 for international calling.
Petr is on a trip in Germany, and he calls his friend Karel, who has a Czech O2 number too, but who is in France. Petr pays the rate charged on his roaming tariff (e.g., with O2 Eurotarif he will pay CZK 17.40 for a 2-minute call in Germany). Karel pays for receiving the call according to his roaming tariff (e.g. with O2 Eurotarif he will pay CZK 4.60 for receiving a 2-minute call in France).
If Karel calls Petr back, they will both pay according to their roaming tariffs - Petr for receiving the call; Karel for calling.
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