Most of the time ios’s location service uses wifi access points. I was able to look like I was in maine using the mac address and ssid of a wifi router there. As easy as that sounds, if there are a lot of routers around you would probably have to block them out.

It can be relatively easily done with a PC. There is a software I forgot the name, that lets you do many things, including side-loading and gps spoofing. Kinda defeats the purpose, because you can side load right there lol.