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Originally Posted by DRNewcomb

Does anyone know if a transfer of some of the balance from one UM card to the other counts as activity for computing card expiration?

Interesting question. My immediate answer would be that it doesn't count.

I think the English wording of the FAQ is misleading, since it states: "SIM card and credit will become invalid if the credit has not changed for nine months." Credit does change if you make a transfer!

However, the French FAQ is more consistent with my immediate answer:"La carte SIM et le crédit deviennent caducs au bout de neuf mois à compter de la dernière utilisation." (and I wouldn't say that recharging is an "utilisation").

Italian FAQ further confirms this, as it states, after having used the same wording ("from the last use of the sim"): "this applies both to the initial credit and to the subsequent recharges").

La carta SIM e il credito scadono dopo nove mesi dall'ultimo utilizzo. Questo vale sia per la carta SIM compreso il credito iniziale, sia per ogni ricarica successiva

I would say, therefore, that the transfer doesn't count, but it's my own interpretation...