Since the unveiling of iPhone Duo , the idea of all major interface navigation elements being accessible from your thumb has been really interesting. Apple re-invented the idea of smartphone navigation with the outer display on iPhone Duo , and now it feels quite wrong that every smartphone puts...
Source: [9to5Mac](https://9to5mac.com/2026/10/04/iphone-duo-shows-what-the-future-of-smartphones-could-look-like/)