Samsung is reportedly planning to supply Apple with OLED displays for the iPhone with an estimated 100 million units each year. According to a local report, Samsung Display has signed a deal with Apple to supply millions of 5-inch sized OLED panels for the iPhone 7S. The deal is said to be worth $2.6 billion (10 trillion won) and would see Apple working closer with its competitor for more advanced components.
Interestingly, this would mean Apple would eventually be making the switch from LCD to OLED. The move would enable Apple to potentially reduce the size of bezels on future iPhones, as well as producing higher quality visual experiences on-screen. And since pixels only need to be backlit if they're currently in use and aren't "black", battery life could be improved further.
The report details Samsung requesting a guarantee of three years, to which Apple has refused. It was previously reported that Apple was looking at manufacturing partners for OLED panels. This latest report also matches the recent rumor of Apple ditching LCD in favor of OLED in 2017.
As always with unconfirmed reports and speculation, all this could well change or be inaccurate so do take with a grain of salt.