Russian forces annexed Crimea from Ukraine in March 2014, drawing international condemnation. The region, which has a Russian-speaking majority, now appears as Russian territory on Apple Maps and the Weather when viewed from Russia.
But the app doesn't show it as part of any country when viewed from elsewhere.
Crimea and Sevastopol now appear on Apple devices as Russian territory, the State Duma.
Russia treats the naval city of Sevastopol as a separate region.
The BBC tested several iPhones in Moscow and it appears the change affects devices configured to use the Russian version of Apple's App Store.
Apple has been involved in talks with Russia for several months over what the State Duma described as an “inaccuracy” in the way Crimea was marked.
Apple initially suggested that it could show Crimea as undefined territory, part of neither Russia nor Ukraine.
However, Vasily Piskaryov, chairman of the Duma's security and anti-corruption committee, said Apple had complied with the Russian constitution.
“Today, with Apple, the situation is closed, we have received what we wanted,” said Mr. Piskaryov.
He also said that Russia has always been open to “dialogue and constructive cooperation with foreign companies.”.
Apple has not yet commented on this decision.
Google, in its popular Maps app, also shows that Crimea belongs to Russia when viewed from Russia. The changes were made in March.
When Google Maps is viewed from Ukraine, the maps show no clear border between Crimea and Ukraine, nor a border between Crimea and Russia, according to BBC.
Most of the international community, including the EU and the US, does not recognize Russia's annexation of Crimea.
The loss of Crimea is a deep wound for Ukrainians. Shortly after the peninsula was annexed in early 2014, a separate conflict erupted in the eastern regions of Donetsk and Luhansk, when separatists mobilized against the Ukrainian state.
Ukraine and the West accuse Russia of sending troops to the region and arming the separatists.
Moscow denies this, but instead says Russian volunteers are helping the rebels. More than 13,000 people have been killed in the conflict. The BBC does not show Crimea as part of Russia on its maps, but highlights a dotted line to mark disputed territory.
