iPhone 4 Verizon has Dual-Mode GSM/CDMA Chip

On February 7, 2011

Repair firm iFixyouri and 9 to 5 Mac have done a quick teardown of the Verizon iPhone and found Qualcomm MDM6600 chip inside iPhone 4 verizon. What is that mean? Qualcomm MDM6600 chip is dualmode that supports and compatible with GSM and CDMA, hence there is a rumors that the future iPhones will be dual-mode “world phones”. Since the Verizon iPhone doesn‚Äôt have a SIM slot, it probably won’t be doing GSM duties for time being, but the inclusion of this chip suggests that Apple may move away from separate GSM and CDMA product lines as soon as the next iPad, and probably the iPhone 5 will be dual-mode, one phone that can be used on both Verizon and AT&T (and obviously every other carrier outside the US).

iPhone 4 Verizon Dual-mode Chip

The Motorola Droid Pro currently uses the same Qualcomm chip to offer both CDMA and GSM compatibility. The MDM6600 supports HSPA+ data rates of up to 14.4 Mbps, as well as CDMA2000 1xEV-DO Rev. A/Rev. B with data rates up to 4.9 Mb/s (though Verizon’s network currently only uses Rev. A which maxes out at 3.1 Mb/s). The Verizon phone will only work on CDMA systems not only due to the lack of a SIM but also because of the antennas: as iFixit notes, “this phone supports two cellular frequency bands, while Apple supports five bands in the GSM version.”

There also more minor changes on iPhone 4 Verizon, such as:

* Vibrator is quieter, softer feel, and makes a better sound when on a table
* Speaker Housing
* Cable Protector
* Cable goes under the battery to reach the logic board
* Logic boards have different connectors in different places
* More screws holding the board down
* Headphone jack
* Different cover for the front facing camera
* Dock connector flex
* Different frame for the glass