The "disable services" app (blue android icon), does it really work? topic

I ask because, as an experiment, i disabled all external servces for the free version of draw something, 4 in total.... including "ad manager service"... and the game still runs but was still able to know it was supposed to have ads, and loaded them just fine....

so it has me wondering if it really does anything at all??

ive been trying over time to slowly google what is safe to disable, but since i knew i could just redownload that if i messed it up, i tried it. but nothing happened...