South Korea launches the world’s first fully-fledged 5G mobile networks Friday, a transformational leap that already has superpowers sparring for control of an innovation that could potentially change the day-to-day lives of billions of people.

The superfast communications heralded by fifth-generation wireless technology will ultimately underpin everything from toasters to telephones; from electric cars to power grids.

Facebook chief Mark Zuckerberg's call for "globally harmonized" online regulation raises questions about how internet platforms can deal with concerns about misinformation and abusive content while remaining open to free speech.

Here are key questions about the latest proposal from Facebook:

Facebook on Friday said it is tightening live video streaming rules in response to the service being used to broadcast deadly attacks on mosques in New Zealand.

Facebook announced on Friday changes to the way political advertisements are handled on the social media site ahead of the upcoming European Parliament elections.

Twitter said Thursday it could start tagging tweets from newsworthy figures such as U.S. President Donald Trump that break its rules, while stopping short of deleting them.

A U.S. trade judge ruled Tuesday that Apple had violated a Qualcomm chipmaker patent and said she would recommend banning imports of some iPhones.

The European Parliament on Tuesday adopted copyright reforms championed by news publishers and the media business, in defiance of the tech giants that lobbied against it.

Facebook said Tuesday it shut down more than 2,600 fake accounts linked to Iran, Russia, Macedonia and Kosovo and aiming to influence political sentiment in various parts of the world.

Taiwanese laptop maker Asus unknowingly pushed malware to thousands of computers after one of its servers was hacked last year, potentially affecting more than one million people, Russian cybersecurity firm Kaspersky Lab said.

Facebook-owned Instagram on Tuesday made a move into potentially lucrative e-commerce by adding an option to buy products shown off in posts by selected brands.

A new "checkout" button for instant purchasing launched in a beta version of the app in the US with a limited number of businesses, according to the popular image-centric messaging service.