If you never bought a membership plan for more than 13 months then your SIM will no longer be usable - it cannot be reactivated and the number associated with it will have been "recycled" already:
7.2 In addition to the circumstances set out in Section 7.1 above, we may suspend (i.e. bar), restrict or end the provision of the 48 Services (in total or in part) if you choose not to purchase top up credit or make a chargeable use in respect of your Account for a period of 6 months.
7.3 Where the 48 Services are suspended because you have chosen not to purchase top up credit or make a chargeable use in respect of your Account for a period of 6 months, we will remove any credit on your Account after a further 2 months and credit will not be recoverable. Your service will then remain suspended for a further 5 months and can be reconnected at any time during this period. When the suspension period ends your service will be disconnected, this agreement will end and your number will be immediately lost.
If you want to use 48 again then you'll have to start from scratch as a new user:
If you need to contact 48 support about this then see the links in my signature below.
