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Discuss Why is iPhone quad-band??? at the General - Hackint0sh.org; The fact that Apple advertises that the iPhone is quad-band is puzzling. If you made ...
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    Default Why is iPhone quad-band???

    The fact that Apple advertises that the iPhone is quad-band is puzzling. If you made it a "world-phone" but have it tightly locked into a specific carrier, what's the point?

    In the days of Cingular, you could call them up and tell them you were going to be traveling to Europe and needed your phone unlocked and they would send you the code/instructions. Has anyone tried this with the iPhone?



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    they may allow this kind of unlocking in six months or so but I've read that they will not do it now.

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    m1c
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    AT&T uses the gsm standard, there are 4 main frequency bands (http://en.wikipedia.org/wiki/GSM_frequency_ranges ) in use worldwide for voice - high speed data accesss (UMTS or WCDMA) - which is not enabled in the iPhone - primarily uses another 2 bands. Being a member of the GSM association as the majority of carriers are, enables roaming to other networks - whether or not the phone is itself locked to a 'home' operator. Credit or account issues withstanding, a quad band phone enables worldwide use- the unlocking you mention is an account lock, not a phone lock. Rates for roaming in some countries can be outrageous, which is the likely reason for the lock.

    In Europe people cross international borders much like USA people cross state borders, so this account locking is not common.

    As the GSM standard serves over 170 countries and with 2.4 billion users or more one can see why Apple chose GSM (not that a CDMA standard phone as used by Verizon or Sprint is any more difficult to manufacture) see www.gsmworld.com

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    Quote Originally Posted by m1c View Post
    AT&T uses the gsm standard, there are 4 main frequency bands (http://en.wikipedia.org/wiki/GSM_frequency_ranges ) in use worldwide for voice - high speed data accesss (UMTS or WCDMA) - which is not enabled in the iPhone - primarily uses another 2 bands. Being a member of the GSM association as the majority of carriers are, enables roaming to other networks - whether or not the phone is itself locked to a 'home' operator. Credit or account issues withstanding, a quad band phone enables worldwide use- the unlocking you mention is an account lock, not a phone lock. Rates for roaming in some countries can be outrageous, which is the likely reason for the lock.

    In Europe people cross international borders much like USA people cross state borders, so this account locking is not common.

    As the GSM standard serves over 170 countries and with 2.4 billion users or more one can see why Apple chose GSM (not that a CDMA standard phone as used by Verizon or Sprint is any more difficult to manufacture) see www.gsmworld.com

    You missed the point of my rhetorical question. With the exception of international roaming (does that even work on the iPhone?), the carrier (or service-provider) lock on the phone (not a "phone lock" or "account lock" as you state) negates just about every other positive aspect of having a quad-band GSM phone.


    P.S. - In Europe carrier locking is very common. Most of their phones are subsidized just like ours.

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    It's locked because apple gets a cut of the monthly revenue from at&t, and they want to hold on to that as long as possible.

    It has already been verified it roams anywhere in the world with GSM.


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    It's quad-band so that it works on the majority of GSM networks world-wide. I need that when I roam. Tri-band devices leave out some very important coverage.

    US tri-band without 900 means that outside populated areas in many countries, I won't get coverage (and in quite a few places, none at all!). World tri-band without 850 means I won't be using AT&T or any other rural GSM provider in the US. T-mobile for the time being is all 1900 but is moving rapidly to embrace 850 roaming. Also, several Central and South American carriers run on the US bands.

    The only places this phone won't work are Japan and South Korea. My hope is for Apple to support ALL modes of operation (quad-band GSM, 850/1700/1900/2100 UMTS). I have the feeling it'll be two models with either US or World UMTS. Incidentally, Australia has adopted HSDPA at 850, so Cingular handsets will support 3G there and a 3G US iPhone would work fully there.

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    m1c
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    After trying to hold out until iPhone 2.0, I found I could not wait! So, I bought the phone and then enquired about international roaming. I found that I had to add a plan in order to enable international roaming - as I split my time between USA and the Netherlands, I figured it was worth it. For 5.99 I added a plan that discounts international calls and for 20.00, I added the iphone international data package.

    Judging from the looks and questions i get, iphone will be very popular on the east side of the pond as well!

 

 

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