(CNBC) -- European Union regulators have slapped Alphabet-owned Google with a record 4.34 billion euro ($5 billion) antitrust fine for abusing the dominance of its Android mobile operating system, which is by far the most popular smartphone OS in the world.
Google said in a statement that it would appeal the ruling, arguing against the EU's view that its software is restrictive of fair competition.
European officials say Google's parent company has unfairly favored its own services by forcing smartphone makers to pre-install Google apps Chrome and Search in a bundle with its app store, Play. It also said Google violated competition rules by paying phone makers to exclusively pre-install Google search on their devices and preventing them from selling phones that run other modified, or "forked," versions of Android.
Advertisement - story continues below