i've had my N900 for 5 years now and only had this problem 5 days ago when i changed telco and the new simcard they gave me.

i used 2 layers of sticky tape on the back of my simcard, reinsert it to its cozy home and voila! my precious N900 lives again!

woohooo!!

thank god i dont have to resort to taking it apart or solder it or hammer it!

i am glad.