It's amazing as Sprint launches 4G in Chicago... AT&T continues to struggle with 3G in the city. I guess what they say... don't trust a wireless provider with Telegraph still in their name. ;-)

You can do it AT&T! I had to work today, Labor Day, and because of the holiday there were fewer people on Chicago's Loop (business district). Oddly I had 5 bars and a 3G signal throughout my work building (high rise). Generally I get 1-3 bars which fluctuates with an Edge signal. So I know my iPhone and building can get a full 3G signal. AT&T has oversold their network. There are too many people on the network. The FCC should stop AT&T from selling iPhones or any smartphone for that matter until AT&T can get more bandwidth in Chicago (NYC, San Fran, etc.) This is an embarrassment for AT&T and tarnishes Apple's reputation.

I'm in the business loop of Chicago at Michigan Ave. and Wacker... crossing the Chicago River bring. The Wrigley Building, the Tribune Tower and the new Trump Tower and I have EDGE with 3 bars! Where's the 3G in Chicago! This is a major area of the city and AT&T can't provide 3G service. :- /

Sprint's service just keeps improving! I laugh at all the poor folks stuck with iPhones on AT&T. I'm sure people can't wait until the iPhone comes to Verizon. Sprint service in Chicago is probably the best of any carrier. All my friends on AT&T complain constantly.

Signal seems to fade in and out. Voice breaks and I have to constantly ask people to repeat themselves. Phone generally shows max bars until I try to place a call, then the bars dramatically drop off and I get a 'call failed' message. About 30% - 40% of initial calling attempts result in a 'call failed' message.

My office is located at Michigan and Randolph... one of my responsibilities is the managing our corporate AT&T account... there are only 2 towers in this area and our coverage is horrible. We rarely have 3G and are usually on Edge with one or two bars. Things have gotten much worse overall in this area and my home area (Streeterville). AT&T won't fess up but there has been a very noticeable degradation in coverage / connection and its worse for data than voice. The staff who use Verizon never have these issues. I've been told that the iPhone and it's stellar sales is being blamed for oversubcription and coverage problems. Apparently each Tower only has 4 T1 lines, which is pathetic. I'm tired of AT&T making excuses and blaming the iPhone instead of solving the problem with their network. It's inferior and they have to know this.

My office is on east side of LaSalle, on the corner of Wacker. Reception is usually zero bars / No Service; if I get reception, calls are frequently dropped.

TERRIBLE to no reception. I live in a high rise apartment and might as well throw my cell phone away. I cannot place calls or receive them. If the call does go through, it is almost guaranteed to drop within 50 seconds. I have been to Verizon and they have nothing to say about it. Verizon updated the software on my phone claiming it would solve all my problems... ... ... .it definitely did NOT. I would stay away from Verizon at all costs. Plus their customer service is sub par

Can only get reception on south side of my building (Bilandic Building west across LaSalle from Thompson Center). Outside in the loop, forget it--even on the bridges where presumably there is less blockage. I only get reception on one block in my walk to the Northwestern train station. Called Cingular, they said they were working on their towers--many of you have been told the same thing over the years. Ask around; there is undoubtedly a class-action in the works.

Live on 30th floor facing the Sears Tower. Get decent reception near my windows (my building is solid concrete) but nothing in hall or elevators. Sometimes bars go from 5 to 1 with no reason - I've seen that is a recurring problem with a lot of people. Communications guy in my office tells me the Sears Tower interferes with cable TV and cell phone reception in the area - something about bursts coming from their HUGE antenna. That seems to make sense to me. But I get really weak reception on the EL and that has nothing to do with it so I think Verizon needs some more repeaters in the area.