Thanks Candela! I'm very glad the post was of some use
To explain how it works it is better to take an example. Let's take for instance the
Tarjeta Ocio prepaid plan from Amena.
In Spain you don't pay in minutes. You "fill" your plan with, for example, 20€ (as if it was gasoline). When you make a call to whichever spanish phone (no matter if it is a mobile phone or fixed one, and no matter where it is in Spain) a certain rate is applied. This rate (in euro cents/minute) depends basicly on the hour of the day and the kind of phone you are calling to.
Let's go back to the example. The Tarjeta Ocio has this rates:
0.72 €/min from 8:00h to 16:00h (from monday to friday)
0.12 €/min from 16:00h to 24:00h (from monday to friday, and the whole weekend from 8:00h to 16:00h)
0.06 €/min from 24:00h to 8:00h (the whole week)
See the above link's graphic.
In the conditions of this plan it is explained that the rates are the same for any phone you call (mobile phones or fixed phones), that establishing the call costs another 0.12 € and that from the first minute the minutes are charged in half minute intervals.
For example, if you call a mobile phone of a friend on tuesday at 8 in the evening you are charged first the 0.12 € for establishing the call, and then the minutes you talk at a rate of 0.12 €/min.
Since you had in your prepaid card 20 € all this is dicounted from it, until you reach 0 € in it. You would have to buy another card to "refill your phone".
Finally,I cannot recieve an international call on my cell, nor can I make one. I can call my friends in Spain on their cells if I use a land line.
This is just a little bit more complicated. You can make international calls, and also receive them.
If you make an international call (not worth of it, better to use either a land line, locutory, international card phone or any other way to do it but the mobile phone, in which is very expensive) you will pay for the whole international call (providing you are calling a fixed phone).
If someone calls you from abroad to your mobile phone, he/she pays for the international phone, but you have to pay for a fixed phone to mobile phone call (I think this is the way it runs, though I'm not 100% sure).
As long as the call goes from the caller to the reciever in spanish territory the caller will pay for the whole call.
Also, I remembered that if you called a cell phone from a landline in Spain it was very expensive, is this still the case?
It costs aprox. 24 eurocents per minute to call from a landline to a cell phone.
At this moment the exchange rate euro/dolar is 1 to 1, so you may make an instant conversion to know how much it cost.
I think I have answered all your questions, if not just say it, I am eager to answer them!
Fernando