After reading some of the replies I think it depends on the primary usage modality of the individual. I classify the activities performed on the iPhone into 3 major categories: 1. Consuming (reading, surfing, watching videos, scrolling social media), 2. Authoring (typing out messages, emails, creating documents), and 3. Interacting (playing games, marking up documents, editing photos).
It sounds like (1) - consuming - can be done 1-handed by many people on all device sizes. (2) authoring is the most difficult to perform 1-handed. I don’t know how anyone can reach the send button in mail or the ‘+’ button in calendar with their thumb without serious device shifting and sliding. (3) interacting also seems difficult to perform 1-handed.
I personally perform a lot of authoring so 1 handed usage even on a 6.1” device is challenging
It sounds like (1) - consuming - can be done 1-handed by many people on all device sizes. (2) authoring is the most difficult to perform 1-handed. I don’t know how anyone can reach the send button in mail or the ‘+’ button in calendar with their thumb without serious device shifting and sliding. (3) interacting also seems difficult to perform 1-handed.
I personally perform a lot of authoring so 1 handed usage even on a 6.1” device is challenging