How to find the manufacturer of iPhone?

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"How to find the manufacturer of iPhone?"

If you're in a taxi, or on the road, drive north of Shenzhen, China. Oh, do you mean "which company manufactures the iPhones for Apple?" The answer is "Foxconn".

Since Apple is the only manufacturer of phones, I assume you mean you want to find out what carrier it's locked to...

All iPhone's are manufactured by Apple.

I am wondering if the OP is wanting to know what is the company that Manufatures the iPhone?

Ah, you mean what country the phone was manufactured for.

LL = USA - AT&T

If you want.