With the iPhone 6 set to come in two separate display sizes — a 4.7-inch model, and a 5.5-model — Apple needs to increase the iPhone’s resolution to keep up. But what will the new resolutions be? Up until now, Apple has stuck with 326 pixels-per-inch for all Retina iPhones, but will larger iPhones require higher pixel densities.
Pulling out a spreadsheet, Daring Fireball’s John Gruber worked out the math for what he thinks the resolutions of the iPhone 6 will be. Using the Pythagorean Theorem, Gruber says that he thinks the 4.7-inch iPhone 6 will keep the current iPhone’s 326 pixels-per-inch, but the 5.5-inch model will have an astonishing 461 pixels-per-inch, making it practically Super Retina..