We've been listening to the truth that iPhones are going 120 Hz this year for a while now, and nowadays a new record from Korea essentially confirms that, while adding some intriguing new info.
Only the iPhone 13 Pro and iPhone 13 Pro Max are said to get the brand new LTPO AMOLED displays with 120 Hz refresh rates, and these will be made exclusively by Samsung Display. Not simply that, but Samsung Electro-Mechanics will deliver the rigid flexible printed circuit boards (RFPCB)
These are used to attach the OLED panel to the primary board. RFPCB is rigid but can be folded, which allows for more handy product designs (devoid of unsightly 'chins') as well as quicker transmission of electric signals. RFPCBs are more expensive than more conventional FPCBs.
Samsung Electro-Mechanics had considered exiting the RFPCB enterprise final year, because it hasn't visible a income in the past couple of years. The last product it supplied boards for was the iPhone 12. And reputedly an exit might still show up after the iPhone 13 generation.
Samsung Display is expected to supply 110 million panels for iPhones this year, observed by LG Display with 50 million, and BOE with 9 million.