The problem with "loosing" the phone # (after the 90 Days) is: If you give out the # to people at home to call you if needed. I had a friend use my sim card while i was in the states for a few months and he lost the card
,I had to get another one with a different #. I was told that after 60 days of non-use they shut you off, I would buy minutes to leave in the phone if I knew they would still be there and the phone would still be turned on after I came back.