We use our 4620 Jetpack as our internet portal for our Macbook Pro & with 2 iPhones both while at home and on the road. We are currently at a large RV park in Mesa AZ and I find our response time getting worse and worse. I am now often getting bumped back to 3G and having to reset the 4620 weekly or more often. The response has gotten so bad that we find we can get quicker results with the parks grossly overtaxed wifi system than waiting for the jetpack.