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**DoniandaCoado** · 07-08-2010, 07:32 PM

To expand on what idchoppers posted earlier, do you understand the networks in the US Bungle?

AT&T: iPhone 4 works perfectly.
T-Mobile: iPhone 4 only works on EDGE due to T-Mobile using different 3G GSM frequency.
Verizon: iPhone 4 not supported as Verizon is a CDMA network.
Sprint: iPhone 4 not supported as Sprint is a CDMA/WiMax (4g) network.

Us in the UK are lucky enough that all networks are using the same GSM bands.

I think the main problem is the contract to keep it exclusive to AT&T though..?

07-08-2010, 07:32 PM	#19
DoniandaCoado Join Date Oct 2005 Posts 518 Senior Member	To expand on what idchoppers posted earlier, do you understand the networks in the US Bungle? AT&T: iPhone 4 works perfectly. T-Mobile: iPhone 4 only works on EDGE due to T-Mobile using different 3G GSM frequency. Verizon: iPhone 4 not supported as Verizon is a CDMA network. Sprint: iPhone 4 not supported as Sprint is a CDMA/WiMax (4g) network. Us in the UK are lucky enough that all networks are using the same GSM bands. I think the main problem is the contract to keep it exclusive to AT&T though..?
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