Apple may have to allow rivals to operate their own app stores on iPhones in the UK, after a ruling from the competition regulator.
This would be a significant change to Apple's infamous "closed system" where apps can only be downloaded from its own App Store.
But the Competition and Markets Authority (CMA) has designated both Apple and Google as having "strategic market status" - effectively saying they have a lot of power over mobile platforms.
The ruling has drawn fury from the tech giants, with Apple saying it risked harming consumers through "weaker privacy" and "delayed access to new features", while Google called the decision "disappointing, disproportionate and unwarranted".
The CMA said the two companies "may be limiting innovation and competition".
