A SIM card is deactivated when it has not been used for the last 6 months. The activity during this period is defined by:
At least one call, SMS or MMS made to another number*,
or at least one connection to Internet,
or at least 4 received calls of more than 10 seconds,
or at least one top-up / purchase (credit or goodybag),
or receiving Payback points (for recruiting new members or participating to the Community).
These criteria are defined to prevent the deactivation of members with very little activity or who are active on the Community without using their SIM card much.
* For technical reasons, the following calls do not apply: emergency calls, SMSes or calls to giffgaff services (e.g. 2020, 43430).