I got an iphone a week ago and successfully unlocked it so that I can use an old ATT SIM I have (better plan) and use other SIMS when I'm abroad. However, I'm starting to feel nervous about what will happen with the next firmware update, and also about what will happen if the phone needs warranty service. I LOVE it, but am wondering if it will be worth it...

The whole beauty of the iphone is that its functionality can be significantly upgraded over time, but nobody knows if we'll be able to do that and keep it unlocked. There's also no track record with these phones - they might develop serious issues in the future and Apple will refuse to touch it. Because of this I'm beginning to think I should return it and get a regular phone. I love the iphone, but sadly I feel Apple has ruined the pleasure by locking it down. unfortunately, it will be really hard to use another phone after this..

Any thoughts? Anything I should consider before I take it back?

Thanks...