Some unofficial sources confirm what we have been discussing for a long time and that is that Apple would switch to OLED screens in all iPhone models. In this case we have to say that for this year the LCD panels are expected to continue to be part of some iPhone model, but by 2019 they will all be OLED.
If we talk about OLED screens in Apple and its products, we have to go to 2015 when the company launched the first Apple Watch model, at that time the OLED era started that culminated with the launch of the iPhone X last year, but this it does not stop and soon all the models will mount this type of panels.
Limitations in production and high price
These would be two of the reasons why the guys from the Cupertino company, have not launched this year for the "all OLED." It seems that limitations in production This type of panel would be a risk for the apple firm that needs enough stock to supply the demand for the iPhone, its only mobile device. And on the other hand the high price of this type of panel it makes the company patient and wait a little longer to finally launch into OLED.
In this case, we are not facing an official confirmation by Apple either, but it is assumed that with the passage of time all screens will put aside the LCD panel and go to OLED, as they well affirm in ETNews. Will we see three iPhone models this year? If the answer is affirmative, some of them will mount a safe LCD panel, but the rest should have OLEDs. We will see what Apple has prepared for us next September so far it's all rumors and assumptions.