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iPhone 3G Reception Problems? You're Not Alone - Continued

This thread is a continuation of iPhone 3G Reception Problems? You're Not Alone, which has been locked. The thread was too long and some browsers were timing out. The above link goes back to the original thread.

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PM G5, iMac, iPods, Mac OS X (10.5), Mac OS 9.2.2

Posted on Jul 26, 2008 10:50 AM

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786 replies

Jul 30, 2008 3:03 AM in response to taltal

Here in Berlin, Germany, I do not have any issues with 3G reception but I occassionally have problems with dropped calls. The coverage in downtown Berlin is excellent though.

Just a few thoughts on the problems some users are having:

1. Do not compare the reception bars on your iPhone with other phone. They are not standardized. I have an old Nokia 3G phone that gives me full bars where the iPhone gives me two bars only, but when you look in the network monitors they actually have the same reception.

2. In contrast to GSM networks you can normally take full advantage of 3G even with one bar only. 3G and GSM networks are totally independent and not just a different codec implemented in the existing GSM network (some users I believe think that it is the same network as GSM therefore expecting the same coverage)

3. 3G is not 3G. Here in Germany all cell towers of the 3G Network of T-Mobile have HSDPA implemented. Therefore i can get up to 7.2 Mbit/s download rate (some cell towers up to 3.6 Mbit/s). As I understand, AT&T has a mix of both UMTS and HDPA Towers. On UMTS only, you can only get a maximum of 384 Mbit/s.

Please also understand that 3G bandwidth is shared by everybody using the cell tower, which also explains the higher speeds you receive in off-peak hours.

4. Due to the nature of 3G networks the coverage is dynamic. The cell you are connected to is "breathing" depending on the amount of active users. Therefore you may also experience a better coverage on some days compared to other. In fact, coverage can change by the minute.

5. There is definitely a "dropped call issue" with the iPhone. A lot of first generation 3G phones used to have this and I think it can definitely be addressed by firmware update (hopefully soon)

6. The SIM cards has as much to do with the reception of your iPhone as the colour of the t-shirt you are wearing. Seriously, any experience in this regars is imagination or owed to the fact of the dynamic 3G coverage (see above)

Jul 30, 2008 3:14 AM in response to Airlancer

{quote:title=Airlancer wrote:}I have an old Nokia 3G phone that gives me full bars where the iPhone gives me two bars only, but when you look in the network monitors they actually have the same reception.{quote}

This doesn't seem to be true for other users. They do experience NO SERVICE on the iPhone 3G while they can make an receive calls with other handsets (you find this in posts further up or in the original thread).

Jul 30, 2008 3:53 AM in response to Kefrens

Kefrens wrote:
Hi guys,

i live in switzerland and i have no problems with my 3G. I have a black 16 GB version. Software 2.0 ( 5A345 ) installed.
The SIM is about 5 years old and works fine.

Don`t know if only you guys in the US have the problem but for me in switzerland and my friends in germany everything works fine....

I`m sorry for your trouble with your iphones.....

Best regards from switzerland and sorry for my lousy english 🙂


Hi Kefrens,

Could you give us some information about your iphone? For example, model number, serial number (first five digits only) and firmware version. Thank you.

[]s,
Marlos.

Jul 30, 2008 6:04 AM in response to taltal

You should use your 2G maps because AT&T puts a blanket BLUE over everything for 3G coverage. A better gauge of your expected reception is the 2G map which is before the hype about total coverage. My 3G tower is miles away from my house. When I move towards it inside by house from the bedrooms to the living room, the bars go from none to 1-3, depending on where in the living room I am (near the window towards the tower etc.). No, the antenna and chip are tuned to use less power and that increases battery and reduces reception/transmission. My iPhone doesn't switch back and forth. It stays until it is more or less forced to switch. Riding down the freeway on a bus I watched the antenna go through great 3G to none, finally switch to 2G near the university where you would expect full 3G......... So the power saving and poor 3G antenna coverage is where I see the problem. There are NOT as many 3G towers as they would have you believe, even on the I-5 corridor as you would think has full 3G coverage. Peace out.

Michael

Michael

iPhone 3G Reception Problems? You're Not Alone - Continued

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