Piranha Mobile Sim Card

Originally Posted by fsotirop

O2 UK i think

Then in the rest of the world it uses O2 partners, no?

Originally Posted by rfranzq

Tiny text quote for illustrative purposes only.

If you go to the web page and look up the rates it will show networks.
In Spain, [I assume you can verify this] all 3 networks listed have the same rate. Is one of them preferred? Does it matter?

I'm not talking about Spain but throughout the world. Many operators are connected to other carriers, but preferred are those in which they are connected primarily. Vodafone uses Vodafone carriers in the world before other carriers.