Book-style foldable smartphones, which open like a passport, are emerging as a major market trend, according to a report from Brazilian outlet UOL. The report highlights Samsung’s Galaxy Z Fold 8 as a leading example of this design category, which is gaining traction among consumers and manufacturers alike.
UOL’s coverage points to the Galaxy Z Fold 8 as a key driver of the format’s growing popularity. The device’s launch has reportedly exceeded sales expectations, with Samsung struggling to keep up with demand. A separate report from tudocelular.com noted that the Z Fold 8 sold above projections, leading to depleted stock in some markets. This strong reception suggests that book-style foldables are moving from a niche curiosity to a mainstream option.
The trend is not limited to Samsung. Forbes Brasil has examined why multiple brands are investing heavily in foldable smartphones, indicating that the form factor is seen as a strategic growth area across the industry. Meanwhile, comparisons between the Galaxy Z Fold 8 Ultra and the previous Galaxy Z Fold 7, published by Oficina da Net, show that manufacturers are iterating quickly on hardware and features to refine the experience.
UOL’s framing of these devices as “passport-style” reflects their distinctive shape: a narrow outer screen that opens to reveal a larger inner display. This design offers a compact footprint when closed and a tablet-like canvas when opened, which appears to be resonating with users seeking more screen real estate without carrying a separate tablet.
As foldable technology matures, the key question is whether Samsung can sustain production to meet demand and whether competitors will follow with equally compelling book-style models. The next wave of releases will likely determine if this trend becomes the new standard for premium smartphones.
