Apple could offer the iPhone 8 in two screen sizes, one which measures 5 inches diagonally and the other 5.8 inches. DigiTimes said in March that Apple had chosen Samsung Display as the leading supplier of AMOLED's 5.8 inches.
In a report, DigiTimes reiterated that Samsung Display will be the exclusive provider for AMOLED Apple's 5.8 - inch screen iPhone in August.
It is also believed that Samsung Dispaly is able to build up to approximately 20 million AMOLED units per month for Apple, bearing in mind that worldwide shipments of the iPhone 8 AMOLED models could reach an estimated 60 to 70 million units .
Moreover, Nissha Printing, based in Japan, would provide tactile sensors for use in the AMOLED's screens next model of iPhone. Given this, supply chain manufacturers should start building parts for the next generation iPhone in March 2017 in small volumes, increasing production in May and June.
Be that as it may, Apple could potentially get additional AMOLED panels from LG Display, Japan Display and Sharp in 2018, according to previous reports.
Samsung, of course, is the world's first producer of AMOLED panels with more than 90% share in the global AMOLED market for smartphones. However, AMOLED panels are expensive and difficult to produce so only front-line phones from Samsung and other Android manufacturers appear.
Apart from iPhone updates 7s and 7s Plus iPhone based on LCD, it is rumored that the iPhone 8 will feature a curved screen design, without bevel. This feature combined with the rumor of the inclusion of the start button on the same touch screen, could theoretically allow the Apple engineers to increase the size of the screen without having to make the whole device larger.