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Bar ranges are changed in the software including the minimum for 1 bar. You may be thinking of the "minimu" as zero signal, which is not the case. The minimum is simply defined as the attenuation as which the device can no longer maintain a connection. It's not a "hard coded change" just a software display change, doesn't mean it'll actually hold a call with that low signal.

Yes I think I understand what you're saying. What I'm saying is that at -121dBm, our phone now shows 1 bar when before it would show no signal. Whether or not it will hold a call at -121dBm is another story.
 
Yes I think I understand what you're saying. What I'm saying is that at -121dBm, our phone now shows 1 bar when before it would show no signal. Whether or not it will hold a call at -121dBm is another story.

Check anandtech.com

they say that the iPhone 4 is able to have very good performance even at very bad reception (-121 dBm) - unless you death-grip it ofcourse ;)
 
Check anandtech.com

they say that the iPhone 4 is able to have very good performance even at very bad reception (-121 dBm) - unless you death-grip it ofcourse ;)

Gah! Then I'm totally confused... Let's say you put an iOS4.0 iPhone 4 and an iOS4.01 iPhone 4 into a controlled environment with a signal of -120 dBm. According to the graph above, the iOS4.0 phone would show No Signal, whereas the iOS4.01 phone would show 1 bar.

What I'm wondering, is would this impact either phone's ability to make/receive a call? If the phone is indeed capable of performing at -121 dBm, will the former phone hold a call while displaying "No Signal?"
 
Sneaky sneaky. So now this will shift the issue back to AT&T as people will say there phone is still showing one bar but can't get service.

Hey, if I'm Steve Jobs or whatever high ranking Apple person who deals with ATT, I have to say sorry man, we faked the bars for you 22 months ago (or whenver the update for the iPhone 3G came out that did it) and you guys have pretty much twiddled your thumbs and issued press release after press release saying how you were going to start improving your network "real soon now" while we get blamed for your poor performance. Sorry, the gigs up and we are throwing you to the wolves so get ready to fend for yourself.
 
Gah! Then I'm totally confused... Let's say you put an iOS4.0 iPhone 4 and an iOS4.01 iPhone 4 into a controlled environment with a signal of -120 dBm. According to the graph above, the iOS4.0 phone would show No Signal, whereas the iOS4.01 phone would show 1 bar.

What I'm wondering, is would this impact either phone's ability to make/receive a call? If the phone is indeed capable of performing at -121 dBm, will the former phone hold a call while displaying "No Signal?"

Actually after thinking about it, I think the white zone is what used to be no bar zone. I know previously I would see no bars but the AT&T logo would still be there meaning I still had service, so maybe this just got rid of that and it now shows one bar until you have no service.
 
Gah! Then I'm totally confused... Let's say you put an iOS4.0 iPhone 4 and an iOS4.01 iPhone 4 into a controlled environment with a signal of -120 dBm. According to the graph above, the iOS4.0 phone would show No Signal, whereas the iOS4.01 phone would show 1 bar.

What I'm wondering, is would this impact either phone's ability to make/receive a call? If the phone is indeed capable of performing at -121 dBm, will the former phone hold a call while displaying "No Signal?"

Since it is a software-only change, unless the phone would shutoff automatically below the cutoff, you will likely see one bar and still be unable to use the phone.
 
Hey, if I'm Steve Jobs or whatever high ranking Apple person who deals with ATT, I have to say sorry man, we faked the bars for you 22 months ago (or whenver the update for the iPhone 3G came out that did it) and you guys have pretty much twiddled your thumbs and issued press release after press release saying how you were going to start improving your network "real soon now" while we get blamed for your poor performance. Sorry, the gigs up and we are throwing you to the wolves so get ready to fend for yourself.

Actually, no. They did it because when they released the original iPhone 3G people were complaining that the reception was bad and worse than other AT&T phones. Then after the update people praised apple saying they fixed the reception problems and proceeded to blame AT&T for dropping calls and having slow Internet connections even though their iPhone showed full bars. :rolleyes:
 
Well, the Update did what it said, better represent the signal strength. :) However, after the update, I took off my bumper to test it out, I was on my MicroCell and got it to start dropping bars. So then I thought "Hey, I got an idea" So I walked up to the closet with the MicroCell, held the phone next to it and got the bars to drop to 1. I personally don't have an issue with the bars thing, and I love Apple, but I couldn't resist this picture. :D

photonb.jpg
 
Actually, no. They did it because when they released the original iPhone 3G people were complaining that the reception was bad and worse than other AT&T phones. Then after the update people praised apple saying they fixed the reception problems and proceeded to blame AT&T for dropping calls and having slow Internet connections even though their iPhone showed full bars. :rolleyes:

OK, we are talking flip sides of the same coin here though. I personally think it is part ATTs crappy network and part something in the way the iPhones interact with it that makes it worse, so I really blame both companies somewhat, but ATT has been pathetically slow in actually doing anythign of value to upgrade the network.
 
OK, we are talking flip sides of the same coin here though. I personally think it is part ATTs crappy network and part something in the way the iPhones interact with it that makes it worse, so I really blame both companies somewhat, but ATT has been pathetically slow in actually doing anythign of value to upgrade the network.

I guess we sorta agree. I don't think at&t's network is any where near as bad a people seem to think. Its not perfect and of course it all depends on where you are, but isn't interesting that most of the people complaining about at&t's network are iphone users? How many blackberry, motorola, samsung, nokia, or even pantech users do you hear complaining about the at&t network? I have both an iPhone and a Nokia flip and I can tell you that the last 2 years I rarely made any calls on my iPhone and istead used the nokia because the iphone was particulary bad at that task. The new iPhone, sans reception issue, is actually MUCH better at this task. The replacement I got I purposefully used alot today to make my phone calls and its almost on par with my nokia.
 
perception might be ATT is to blame. But all carriers will see the change reflected

An intelligent person might deduce that perhaps the iPhone has a weaker radio than what was thought vs the signal is weaker.

Maybe that's why a few years back when the public said they had low bars they "changed their formula" and magically with the next os update people saw more bars.
 
Awesome, now 80% of my calls are dropped, and this phone is the only 3G phone in the room which shows 1 bar.

So from 5 bars to 1, I feel much better Apple :/
 
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