AT&T service has always been bad since I got the iPhone. Now it's almost completely unusable. One bar and no ability to make outgoing calls the last two days, where at home in Cambridgeport or at work at Boston University. Time to move on. Never again will I be stuck with AT&T.

AT+T data sucks throughout most of Cambridge (Kendall / MIT). Pretty slow outside. Once I go into a building... forget about it.

Good but drops calls for no reason.

Concord ave / Huron neighborhood is very spotty. Have had AT&T for years; it sucks here (recently moved here) both indoors and outdoors. Good signal sometimes, other times zero or Edge. Same location and even time of day! I complain to AT&T every day. So should you.

Very poor service in my place! It's very spotty, although it seems fine once I leave my place and place a call outside. It wouldn't be such a big deal if I had a home phone, but this is my home phone! Wanted to wait for the iPhone 5. For Verizon instead of AT&T. But don't know if I can last

Nothing inside, occasionally 1 bar outside. Frequently nothing. Generally poor all over. Most calls drop.

Just got the iphone 4 as an upgrade from my palm centro. I can no longer get calls in my house or in majority of work. The calls I do get drop about 50% of the time. My friends atnt iphone 4 surfs 12 pages before I load one. I will be sending the iphone4 back in the morning.

Been with ATT for 4 years through all iphone models. used to experience decent signal strength. Now reception quality is poor to none. First started experiencing dropped calls after upgrading to G4(average 5 times during a 20min call), and no reception in areas where I previous had a decent reception with 3g. Often find a vm without the phone ringing at all. (Sometimes vm's arrive a full 24 hours after the messages were left.) I returned 4g and came back to 3g, fed up with constantly having to apologize for dropped calls. 3g reception is a little better than 4g, but still noticebly far worse than it used to be. coverage map shows this area to be solid dark-orange(max possible) reception, but my experience says otherwise. AT&T is clearly overloaded beyond its capacity.

my contract with Verizon ends soon and i'm looking forward to switching to another carrier. spotty in bldgs around here and can't use it well in all areas of my home but what really gets me is verizon's data requirement.

It is awful. And I can't believe it is my only option for the iphone, which I really like. This is ridiculous! I can't get calls in my office. I also can't use it in my apartment complex in Melrose MA! Hideous.

I get tons of dropped calls and very poor reception. Even on the street outside my house my reception is poor. When Verizon gets the iPhone, I'm done with ATT.

AWFUL reception! I've been on AT&T for about 1.5 years and the reception wasn't bad until this summer. Now it's just horrendous. A cell phone is necessary for my business and I cannot have such awful service. Time to move on!

I basically can't use my iPhone to talk when I'm in my apartment.

From reading other comments, T-Mobile is not the only carrier with signal problems in Avon Hill. A couple blocks over the signal is OK, but on my block it's X to 1 bar and regularly hops between analog and digital signal, or misreports a 3G signal until I try to use a data service and it goes to X.

Reception along this corridor in the past few months has been terrible - used to be much better. Very frustrating...

Poor to no reception today. My Verizon mobile works well. iPhone however keeps dropping calls.. Today very bad, worse than usual. Dropped call about 12 times over 15 minutes. Very annoying. Usually the signal comes in and out here, but not as bad as this morning for wherever reason.

Very poor reception; often none at all; I tried different phones on AT&T service but all the same. Considering switching carriers when contract is up.

I am visiting from Virginia where Verizon has great reception. Here in Cambridge, MA its reception is poor, 1 bar then 0 then 1. The funny thing... . I have visited a few local mall here in Cambridge, Verizon kiosks inside, and my reception is off the charts! Dr.a few mile away from the mall and the signal deteriorates. I presume other carrier do the same... very misleading for new local cell shoppers.

AT&T works much better indoors than my old T-Mobile (didn't work at all inside). AT&T solves the problem of the strange cellphone dead-zone (I've heard complaints about Verizon, and have personal experience with T-Mobile) on south side of Avon Hill.

Very bad reception from ATT. Dropped calls, poor or no 3G, cannot surf and talk at the same time. Am considering going back to Verizon - though they are more expensive.