Foldable smartphones have a reputation of being extremely fragile, but that's not necessarily the case. Samsung uses materials such as strengthened aluminum, Gorilla Glass Victus+, and more to keep the phones safe. But it's the Ultra Thin Glass covering the interior displays on the Galaxy Z Flip 4 and Galaxy Z Fold 4 that are cause for concern, as they have a tendency to be a bit less durable compared to the other elements. That's why an insurance option such as Samsung Care+ is pretty important to have.