The commission further describes the gravity of the antitrust breach as follows: The Company compelled phone makers to ensure the pre-installation of Google Search as well as Chrome browser on all phones operating on Android, it also accepted to remunerate the manufacturers and network operators only if they made the Google Search the exclusive search app. When setting up a new phone, users should see a list of browser apps, with ratings from users and independent reviewers, along with a list of email applications and mapping and navigation apps.
EU Competition Commissioner Margrethe Vestager said the USA tech giant illegally used Android's near-monopoly to boost usage of its own search engine and browser. That makes it hard for other search apps to compete, the European Union says.
After the Google fine was issued on Wednesday, Vestager debunked Trump's remarks, stating at a press conference: "I very much like the U.S.".
The 4.34 billion euro penalty comes on top of a 2.42 billion euro fine ($2.8 billion) that regulators imposed on Google a year ago for favoring its shopping listings in search results.
"Google is a company with a lot of enemies, including in the United States", he said. "A vibrant ecosystem, rapid innovation and lower prices are the classic hallmarks of robust competition".
Since then, Google has been fighting the case and it's now stuck in court.
When Google develops a new version of Android it publishes the source code online, the Commission said.
Google immediately said it will appeal.
A third antitrust case, which is still being investigated, involves the Google advertising placement service AdSense.
Vestager's other major scalps include Amazon and Apple.
European regulators tend to take a wider view of markets, worrying about a "winner takes it all" world, where a few mighty platforms appear to offer consumers a shiny world of free or very cheap goodies, but in reality are devoted to crushing any competition. Facebook will also be looking for changing its business model under pressure.
Google has responded by beefing up its lobbying efforts in the European Union. That compares to $700,000 in 2011.
Brussels has repeatedly targeted Google over the past decade amid concerns about the Silicon Valley giant's dominance of internet search across Europe, where it commands about 90 percent of the market.
"What would serve competition is to have more players", she said.
"Google gives preferential treatment to its own services. or companies have to pay more to be displayed", he said.
Polar Capital fund manager Ben Rogoff said: "The reality is that as long as they're delivering great utility to their consumers, consumers will still use those platforms", he said.