After few months my N900 still have the same sim problem.

I tried a lot of things, but it still in problem.

1) I tried to clean the connectors.
2) I changed the sim card.
3) I tried the "hammer and nail" way. It's was functionnal for few weeks, but now it's still broken.
4) I tried to format it. Same thing

Now I'm very sad. I've this phone since 4 years and I love it, but I think it's the end.

Thanks to everybody who's trying too help.