it doesnt here
at least with the samsung-devices i have/had.
lets see if there is a difference with the n900.

before my samsung devices (u700 and s8000), i had a nokia 6100, which also worked like a charm on my t-mobile card (just like with the samsung-mobiles i had)
i'm still using the same, 7 or 8 year old sim-card (which originally was my fathers) in my current samsung jet. no problems at all.