just need to get your expectations in check, considering it's not originally designed to be a web surfing device, and due to the fact the processor is at most 333Mhz (so think a computer from 10-15yrs ago) :) sorry to bear the bad news.
to increase your Internet speed, delete all temp files and do not open multi screen at a time, theses are most affect your internet speed..further doing all these visit here to check your internet speed
speed test