Perhaps most of the complaints when switching to iOS 6 comes to the address of the map service Apple. It is practically impossible to use it in the countries of the former USSR. I think over time these cards will be no worse than Google. In the meantime, it's better to download the program for iPhone from other developers. Here are 5 free navigation apps that can replace Google Maps.
With the departure of Google Map is now the number one app. Allows you to download offline maps of major cities so as not to depend on the Internet. The program is connected to the service of city traffic. Program description.
Free service with the ability to download offline maps. Simple, but numbering of houses and outlines of buildings are drawn. Program description.
They work only if the Internet is available. It's hard to get used to the program settings, but the cards are very decent. There is a 3D projection to help you navigate the buildings. The program is inferior to Yandex.Maps in functionality. Comparative test.
Oriented for drivers, but maps can be used too. Works only when there is internet. Program description.
Application is not very common in our country. However, in our area everything is displayed correctly. There is detailed information on the objects. Internet is required. Program description.
Google Earth (not in Russian App Store)
Not just a map, but a whole gazetteer. But there is one nuisance, it is not in Russian App Store. You can install this application on iPhone only if you have bourgeois accounts.