LTPO panels: Already in use on the Apple Watch
The OLED screens installed in the current iPhones are considered unsuitable for 120 Hz: Although they are technically capable of displaying such high refresh rates, this would be too much at the expense of battery life. The alternative is LTPO (Low-Temperature Polycrystalline Oxide): Correspondingly equipped displays are already being used in current Apple Watch models. The iPhone could also benefit from this in the future – and thus enable particularly smooth operation of the devices.
120 Hz for Pro models?
As The Elec reports, LG is working on the production of LTPO panels for the iPhone: The screens should already be used for the next generation of smartphones, while the units manufactured after May 2021 will be used in the iPhone models in 2022. In addition to the fluid display of content (ProMotion), such panels also fulfill other purposes: Certain elements on the lock screen can be permanently displayed without putting too much load on the battery. However, it is questionable whether the technology will find its way into all new models: The report says that this feature will be reserved for higher-end iPhones. According to Ming-Chi Kuo, the iPhone 13 will be equipped with the display sizes known from the current models – and will continue to receive two Pro versions. A ProMotion screen would then be a unique selling point for these devices.