Questions about data usage - O2 / Lidl / FONIC

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Originally Posted by jennifermehl

So, turns out that it's just the FlatRate tariffs that one can NOT pay for via credit card. The other tariffs allow this, so I'll just go with one of them...

yes, because these tariffs are technically a contract as the fee is deducted from your bank account automatically each month. The other tariffs are really pay as you go and so can be ordered with credit card as well.