Is there an expiry period on the SIM4Roaming card?
The credit on a Sim4Roaming SIM card is valid for a period of 12 months. If credit is not used up within this time it will be lost and the SIM card will become inactive. If no calls are made from the SIM card within a 90 day period the card will be de-activated and any credit on the account will be forfeited. It will not be possible to re-activate a SIM card once this has happened.