AT&T

I got the Iphone 4S through our small business package, of course, ATT is the signal carrier. The Iphone was not perform any thing since the day one and we tried to contact ATT service to correct the problem but was not going any where. The iphone signal fluctuated from no service to a single bar. Very embarrassed when it dropped calls so often to business people. That was not the worse at zip code 95008, but when we went home at zip code 95148, the nightmare continued. No service, no signal, even we went out to the front or back yard and still got an except able signal to use the Iphone. When we discussed the problems to ATT, and all their tricks were wanting to sell you a " Microcell " device to boot the signal. we asked them how many " Microcell " that you expected us to buy. Several of them? The rep. answered. That was the joke of the century that we experienced right in our country. We took the same Iphone to some Asia countries earlier and their signal coverage worked a Champion. By the meantime, when I decide to write this review, I have spoken to ATT more than ten time with the same issue, too bad is our contract still has a long way to go. Furthermore, each time they give you a case number and promised some higher level personnel will contact you in couple days but the calls never came.
Was this review helpful to you?AT&T

Constant dropped calls. Single signal strength bar 90% or the time.
Was this review helpful to you?AT&T

My cel reception at my house has gone through ups and downs since I moved. I get dropped calls. I'll get a voicemail 2 hours after it was left, with my phone having never rung. If by some miracle I manage to get a connection, if I don't stand just so, I'll be able to hear the other person, but they won't be able to hear me, or they'll describe my voice as "coming from underwater". At first, I thought perhaps my microphone was failing, but this happens when I use my bluetooth headset as well.
Was this review helpful to you?AT&T

Cellular voice and data reception is unusable. Often get 2 bars but still cannot make or receive calls, send text messages, or connect for data. Told ATT about it. And told them to at least give me a microcell tower. They said no. So I guess they don't need me as a customer. Will definitely drop ATT after my contract's up this year.
Was this review helpful to you?Verizon

There is a sizeable Verizon dead zone in this area, and this is an area of huge development with a new shopping center, corporate offices, and a 450 unit condo complex under construction. Outside of buildings, Verizon is 1 bar - inside there is no coverage - calls not possible. It has been this way for years. Anyone who buys into the new condos under construction at this site better plan on getting a land line! Wonder if they are wiring copper into these new buildings?? Under the 4G load in dense Silicon Valley areas - Verizon's network is beginning to suffer.
Was this review helpful to you?AT&T

No cell signal here for last 5 years. It will not have any improvement neither. The community for the concerns of health, voted down any cell phone towers here.
Was this review helpful to you?AT&T

I have broken multiple iphones in frustration to dropped / ghost calls. Worst ever.
Was this review helpful to you?AT&T

In the last few months the service quality has dropped dramatically. Although my phone shows 3 to 4 bars when I am not on a call as soon as I get a call it drops to 1 or none. I end up losing the connection and have to wonder around outside looking for a good spot to return the call.
Was this review helpful to you?Sprint

Update: It is now September 13, a full week after all \"vision\" upgrades were supposed to have been completed, and service is still poor to nonexistent. All the Sprint representatives have now been trained to say they understand how frustrating it is, but it will all be worth it because the new service is going to be so awesome. I had perfectly fine service before, so for me, no, being without service for more than a month is not going to be worth it, no matter how great the new service is. To their credit, Sprint refunded me two entire months of charges, although I did have to push for it. Previous review, August 5, 2012: Since around 1pm on August 1 (3 days ago), signal went from consistently 4 bars to now wildly fluctuating between 0-3. Sprint insisted for 2 days that all towers were working normally in the area. Finally yesterday they told me upgrades were going on at any given time through September 7, 2012 since April of this year. Representative was unable to give me any useful information about work being done to towers specifically near me. Basically, you may not have service for another month or more, tough luck. Service went from very good to almost unusable.
Was this review helpful to you?Verizon

My phone is new. Shows nothing when I dial. Have tried various nearby locations. Could be the phone? GreatCall is a no-contract company like Tracfone, using the Verizon system. Added to above review.
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