camiile... Hi... yes you can top up either by phone or online, online is easiest...
Try this link.
http://www.movistar.es/particulares/movil/servicios/recarga-online?pid=home-recarga-menu
You can recharge up to 30 euros at a time to a maximum of 120 euros in any one month. You will need to know the phone number, (do not add the 0034 prefix), payment can be by Mastercard or Visa or Visa Electron. Enter the number you wish to recharge, the amount you wish to charge, and the Credit / Debit card details as requested. (cvv refers to the three figure security number on the back of the card). Check the tick box acknowledging acceptance of terms and conditions, then click on ACEPTAR.
On the next page you will be given the opportunity to enter an email address for email confirmation of the recharge. It is optional.
Easy Peasy!
Alternatively, if you feel like living dangerously, you could try phoning 0034 69 999 1004 from the phone you wish to charge. The call will be charged at the normal roaming rate. Again Visa or Mastercard, up to 30 Euros at a time to a maximum of 120 Euros in any one month.
Hope this helps.
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Hope this helps.