“I Phones are great products. Seriously, though, @Apple, please, please, stick to high-tech and entertainment. Global politics is not your strong side. #CrimeaIsUkraine,” said Vadym Prystaiko on Twitter late Wednesday.
“Imagine you're crying out that your design and ideas, years of work and piece of your heart are stolen by your worst enemy but then somebody ignorant doesn't give a damn about your pain. That's how it feels when you call Crimea a Russian land,” he added.
Vasily Piskarev, a top Russian parliamentarian, announced Wednesday that Apple would show Crimea as a part of Russia, but for users in Russia only.
Apple users in the U.S., Ukraine, and elsewhere in Europe would reportedly see no international boundaries around the peninsula.
Russia, Ukraine have been at loggerheads since 2014, when Russia annexed Ukraine's Crimea Peninsula after a controversial referendum.
Turkey, as well as the UN General Assembly, views the annexation as illegal.
Ukraine has also blamed Kremlin for separatist violence in Donbas, eastern Ukraine, near the border with Russia.