Some delays.....

So I have been loading up my iPhone, with 3 gigs to spare on a 16 gig 3G (not S).
Now things have become somewhat slower. Making phone calls at times has become lagged. Someone has stated that it could be the cache file that is getting too big. It turns out that every time that you enter something into Google or Search for something then this gets saved in a cache file. This is apparently how Predictive text works for you when you go to enter the first 3 letters of a word....Interesting.

So anyone know how to clear the cache entirely?


LDD.