Callback(CRM)-services and geolocation, how do they determine the number?

Question

CRM

Hey! Background: when I go online through the ISP's wi-fi router, the address in Chrome is correctly determined up to the city area, when I use the mobile Internet, M * C shows that I am in a city that is 850 km away from me and advertising is also from this cities.
So, when a callback is connected on the website of a company that has 2 branches in different cities, the replacement (virtual) number changes depending on the city. It turns out that if I go to the site via mobile internet and call the number indicated on the site, I will end up in another city, which is 850 km from me, because M*S asks me such an ip, what should I do? How to avoid such an error?

Answer 1

Because cell phones don't tie IPs to cities, they share their pools with the entire subdivision. For example, the head office of the Volga region is located in Samara, and all addresses are tied to it. And physically the subscriber can be in Kazan. Therefore, it is better not to go down below the country in geo-IP.