Hi @Ashima,

welcome to the o2 community!

Assuming you’re using one of our current contracts/tariffs, Roaming Basic will be activated already:
This means you can use your data, send text messages, and make phone calls within EU countries just like you would within Germany. So if your tariff has flat rates for calls or data usage, those will apply within all EU countries.

If you’re in another EU country, you can use the local networks available. Just be cautious when you’re near an international border to a non-EU country since it’s possible your phone may choose the network of that country and your connections are then charged individually.

Best regards,
Jan.