Three point five inches. That’s about the size of the original iPhone’s display. That’s downright tiny compared to today’s smartphones, and it’s hard to imagine typing or using most modern apps on such a cramped screen. But as a secondary panel on a phone that folds in half, even 3.4 inches feels positively roomy. At least, it’s much more useful than the 1.9-inch sliver that we got on last year’s Galaxy Z Flip 4. With its latest flip-style foldable, the $1,000Galaxy Z Flip 5, Samsung brings a 3.4-inch external display that it’s confusingly renamed the Flex Window (it doesn’t flex, so yes, I’m mad at the name). And that’s about it.