BlackBerry 8830

i have had my phone for about 7 hours now. and while i have been trying to play and navigate and such on the internet, my evdo signal plummets and then my phone informs me of no internet coverage and i then have to wait 3-5 min for my signal to plummet to nothing once again and the jump start back to normal where i then can continue to do what i was doing online for another 5 to 10 min until the same thing happens. i already ordered a replacement, just wanted to see if anyone else had this experience