iPhone 6 ifixit teardown
The iPhone 6 Plus teardown has revealed a battery twice the size of the iPhone 5s and a Qualcomm chip. iFixit

Within hours of the iPhone 6 and iPhone 6 Plus going on sale, one eager gadget repair firm has already ripped apart the Apple device to see what's on the inside.

The teardown of the iPhone 6 Plus by iFixit revealed chips from Qualcomm, Skyworks Solutions, and Avago Technologies, as well as a battery twice the size of the iPhone 5s.

The repair firm took the smartphone apart early on 19 September, in Melbourne, having queued overnight at a local Apple store.

iFixit noted that apart from the larger scale, the internal layout of the iPhone 6 Plus is remarkably similar to the iPhone 5s.

According to iFixit, there are "no noticeable booby traps" when removing the front panel, referring to the Touch ID cable on the 5s that could be torn if care was not taken when opening the phone.

The iPhone 6 Plus scored 7/10 in iFixit's repairability score, one higher than the previous incarnation of the device.

Technicians also discovered a Murata Wi-Fi module, a Broadcom touchscreen controller, and a 4G LTE modem.

The iPhone 6 and iPhone 6 Plus went on general sale in retail stores around the world on 19 September, 2014. Apple has already sold more than 4 million devices through pre-orders alone, a record number for the Cupertino company.

"iPhone 6 and iPhone 6 Plus are better in every way, and we are thrilled customers love them as much as we do," said Tim Cook, Apple's CEO.

Analysts at Raymond James expect sales of both smartphones to top 9 million in the first weekend.