Since launching the CDMA iPhone for Verizon back in February, Apple has been producing two models of the iPhone 4: one for AT&T, and one for Verizon. A dual-mode iPhone 5 with support for both CDMA and GSM networks seems like a no-brainer next time around, then, and according to at least one iOS app developer, the device is all but confirmed by logs that show a dual-mode device in testing.

Apple’s latest iPhone 4 launched especially for use on Verizon’s CDMA network has already been given the teardown treatment by our friends over at iFixit, and their findings have revealed that the revised device packs a redesigned vibrator, and changes to the location and design of RF components. However, the most surprising discovery is the Qualcomm MDM6600 chip, which is dual-mode GSM and CDMA compatible.

The use of this particular chip, which also features in the Motorola Droid Pro, signifies that the iPhone 5 will surely be dual-mode, allowing Apple to ship one handset for both Verizon and AT&T, as well as every other carrier in every other country.

The full iFixit teardown of the Verizon iPhone 4 is certainly worth a read, buy you can check out our highlights from the teardown after the break!

Our friends at 9to5Mac have torn down the Verizon iPhone and found a tasty surprise: it’s based on a GSM world phone-compatible chip!

The VZW iPhone is based on the Qualcomm MDM6600 chip, which is dual-mode GSM and CDMA compatible. That means the iPhone 5 will also surely be dual-mode, allowing Apple to ship one handset for both Verizon and AT&T, aw well as every other carrier outside the U.S.

9to5Mac: Verizon iPhone tear-down posted, reveals Qualcomm Gobi chip! (GSM Worldphone compatible!)