We have 5 not I alone. The problems are with AT&T and by the way, Blackberrys are having similar problems. AT&T is the new kid on the 3G block remember? I 'm not sure if they could have tested their networks with the current load.... so it stands to reason that they are using us as beta flies...
If you read post #13 and subsequent dialogue on the link below, you will learn that by nature of 3G signals, regardless of who the carrier you are using is or what phone you are using, 3G signals are much more susceptible to interference. For example, you can be standing in line-of-sight of a 3G antenna and have 5 bars, but if you walk ten feet to your right and stand behind a parked UPS truck, your signal may go down to 1 bar. Read more about this here: https://forums.macrumors.com/threads/548847/
Regardless of whether you have 5 bars or 1 bar, the Safari connection speed it just as fast (based on my experience).