[celly]

If the code is valid, use it. It can't hurt anything and does give you options as mentioned above. Because it can't be used on any other phone, what's the point of not using it? I scored two 9000s just before Xmas and had them both unlocked despite the fact I'm not leaving my provider any time soon. It gives me flexibility of traveling abroad with the phones which is why I did it. As mentioned, it increases resale value of the phone too.