Where can I buy an iPhone?

You can buy an iPhone on line at apple.com, at a Target store, at Verizon, and many other stores.

https://search.yahoo.com/search?ei=utf-8&fr=aaplw&p=where+can+i+get+an+iphone+to+buy

https://www.apple.com/iphone/?afid=p238%7CZuF4Yps6-dc_mtid_20925d2q39172_pcrid_78271660867047_pgrid_1252344306225017_&cid=wwa-us-kwbi-iphone--slid----iPhone-evergreen-

https://www.verizon.com/smartphones/apple-iphone-12-pro-certified-pre-owned/?kpid=bi_cmp-416076438_adg-1230353748793157_ad-76897246791254_dat-2328696908308681:loc-4129_dev-c_ext-_sig-e069d2509e4716c863f0b3abb588f14f&cmp=KNC-C-Mobility-NON-R-NB-NONE-NONE-2K0VZ0-COE-BIN-1000&msclkid=e069d2509e4716c863f0b3abb588f14f

Start here: Find Locations - Apple

Hello ~ Go to the black line at the top of this page and click on iPhone or take a look here:

Apple Authorized Resellers

~Katana-San~

If you want a "fully unlocked from the start" phone you can use with any SIM even international, Apple Store is the way to go. If you do not mind the carrier lock, other paths suggested can work.

What location (i.e. country or perhaps region of a country)?