apple for making and at&t for phone service
apple.com
att.com
iPhone was designed by Apple, manufactured by many ODM like Foxconn, and sold by AT&T, China Unicom, Apple Stores.
apple
Apple developed the iPhone
at&t
It depends on the company you have
No. You only need to unlock an iPhone if you want to use a different cell phone company with your iPhone.
Apple makes the iphone as well as the iPad and iPod.
Apple Computer
Apple www.apple.com
apple
The Apple Company
Foxconn
There is no such company, iPhone is a product, not a company. The company that makes iPhones is Apple. It was incorporated as Apple Computer, Inc. on January 3, 1977, and was renamed as Apple Inc. on January 9, 2007.
He was co-founder and CEO of the Apple Computer company. Steve Jobs himself did not invent the iPhone, the company did.