The savings option will only be renewed if you have enough credit. If you do not have enough credit, you will be informed by SMS that you are using standard tariff. As soon as you have enough credit on your phone again, the savings option will be renewed automatically.
If after 30 days you still do not have enough credit, the savings option will be deactivated and you will have to activate the desired savings option again manually.
Please note: Roaming option will not be renewed automatically, but must be activated manually each time after use.