Change default package

Hello dear O2 team member,

I bought a o2 simcard online and first I charged it using this "o2 my prepaid S" with price 9.99 .

I want to change my defalt package to something else. how can I do this?

I want another package which is cheaper and with less volume of internet but contains calls and sms.

Please guide me for this.

Best,

Elmira

Edit o2 Antje: Verschoben von Prepaid zu Englisch