Corning, the Apple supplier responsible for providing the glass for every generation of iPhone, is facing an antitrust probe by the EU.
The investigation focuses on exclusive supply deals with mobile phone makers and raw glass processing companies that could exclude rival glass producers from the market.
The EU is looking into whether Corning abused its dominant position in the global market for glass used in mobile phones.
Corning may offer concessions to address the EU's concerns, potentially avoiding a hefty fine if found guilty of breaching antitrust rules.