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The iPhone has an UMTS radio that supports the following bands: 850, 900, 1900, 2100 MHz. For GSM/EDGE it supports the 850, 900, 1800, and 1900 MHz bands. http
by Samuel_Michon 16y ago
The iPhone has an UMTS radio that supports the following bands: 850, 900, 1900, 2100 MHz. For GSM/EDGE it supports the 850, 900, 1800, and 1900 MHz bands.
http://www.apple.com/iphone/specs.html http://www.apple.com/iphone/specs.html
In the US, AT&T uses the 850 and 1900 Mhz bands. (There's no other network in the US that has iPhone-compatible 3G service.)
In Australia, Telstra uses the 850 Mhz band, others use the 2100 Mhz band.
In Japan, 1700 and 2100 Mhz bands are used.
All of these frequencies, except for the 1700 Mhz band, are supported by the iPhone 4.
http://www.worldtimezone.com/gsm.html http://www.worldtimezone.com/gsm.html