I bought my iPhone 3G without service contract from here.
The iphone 1.0 is a quad band phone (GSM 850, GSM 900, GSM 1800, GSM 1900) and can operate on both ATT’s and T-mobile’s networks
The iPhone 2.0’s has the 3G chip “Infineon-sourced S-GOLD3“.
It’s a tri-band chip operating at 850/1900/2100Mhz.
ATT offers UMTS or 3G using 850mhz(the old TDMA band) and 1900mhz.
While T-mobile offers HSDPA (technically 3.5g part of the UMTS specification) using 1700MHz for uplink and 2100MHz downlink.
Because HSDPA is part of the UMTS spec, it’s backward compatable.HOWEVER you have the limiting factor begin the frequencies the individual carriers use to transmit the data..
Europe and Asia’s G3 runs on 1900/2100mhz
North and south America is suposed to use the (AWS) 3G spec using 1700/2100mhz
ATT didn’t want to wait, like T-mobile is doing, for homeland security to vacate those frequencies and launched on 850/1900mhz instead
The iphone2.0 would have to be 850/1700/1900/2100 3G and 850/1900 GSM (voice)….
Since it’s 850/1900/2100Mhz you can get 3G on ATT and in Europe
So while you can crack iphone 2.0 and use Tmobile’s EDGE, you will never get Tmobile 3G
I bought my iPhone 3G without service contract from here.
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Thursday, October 30, 2008
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1 comments:
i have the iphone 3g v. 2.2.1 modem firmware 2.30.03 and it's unlocked with a gevey - 3g turbo sim. Tmobile is my carrier and i've heard that as long as i'm using the turbo sim, it's possible to access tmobile's 3g network. Is this true? if not, is there any way possible where i can get tmobile 3g network on my iphone? please help.
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