Apple's iPhone 6 Plus uses chips from Qualcomm, Skyworks Solutions, Avago Technologies and other companies.
Like previous iPhones, the iPhone 6 Plus uses a Qualcomm 4G LTE modem, according to a report by iFixit.
Apple received a record 4 million first-day pre-orders for its new phones, which is double the amount for the iPhone 5 back in 2012.
The company released a 4.7-inch iPhone 6 and 5.5-inch iPhone 6 Plus on Friday. The device will support more than 200 telecoms carriers worldwide.
Technicians from iFixit dissembled the device in a Mac repair shop after lining up overnight to purchase a phone. Technicians also discovered a Murata Wi-Fi module, and chips from Skyworks, TriQuint, and Avago. A touchscreen controller was also discovered, according to their report.
Apple doesn't disclose which companies make the components that go inside its smartphones. It also enforces strict rules forbidding its suppliers from discussing Apple-related business with investors and the media, according to Reuters.
The iPhones that launched on Friday are also the first to include NFC radio chips used for the new Apple Pay mobile payment platform.
The NFC chip in the iPhone 6 Plus comes from NXP Semiconductors, according to iFixit. NXP also supplies a motion co-processor, which allows the iPhone sensors to work without draining its battery.
For other iPhones, Apple has created its own main processor with technology licensed from ARM Holdings. For the iPhone 6 Plus it is the A8 chip.
The device opened by iFixit also included a NAND flash memory chip, used for storing music and photos, made by SK Hynix.
In the past, Apple has relied on multiple companies to supply its memory chips.
Raymond James analysts expects sales of iPhone 6 and larger iPhone 6 Plus to reach 9 million during this weekend.
The two device are available for purchase at Apple Stores, Verizon Wireless, AT&T, Sprint Corp, T-Mobile.
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