IPhone says where caller is calling from?

I receive calls from people and it says where there calling from. For example I received a call and below the number it said Rotherham, England. This is first time this has happened and I was just wondering why. Is it something in my location settings or is it something on their end? If I can see their location can they see mine?

Been an iOS feature for a while now. Simply through things like area code & if you are calling another iPhone (with the number not already in that person's contacts) then yes they can.

Probably an upgrade in software that recognizes the area codes of callers

It doesn't actually say where they are at the moment but rather obtain the location of their area code and suggest that they might be calling from that city. And yes, if you call someone with and iPhone or a phone with that function, it will tell them the city of your area code. It mostly happens if the contact isn't added and it's from another area than yours.

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