Tuenti is excellent

[peterdoo]

Originally Posted by ggking7

You're still misunderstanding. All of the carriers I talked to except for Happy Movil and Tuenti only allow you to buy more data allowance *once* per month. Happy Movil and Tuenti allow you to buy more data allowance an unlimited number of times per month.

Orange Spain also allows renewals of the data allowance of their prepaid plans (Mundo, Ballena, Ardilla) at any time:
https://ayuda.orange.es/particulares...ion-anticipada

If you do it before using the allowance completely, any unused volume of your previous allowance will be lost. So one always starts with the volume of the new allowance only.

The place to do it is a bit hidden in a web user area:
Contrata / Módulos de ahorro / Ahorro en navegación / Renueva los megas de tu tarifa