The Samsung Galaxy Z Fold4 may feature a 'Super UTG' display for improved S Pen support
Samsung finally brought the S Pen to the Galaxy Z Fold series last year with its third-generation model. While seemingly an ideal note-taking device, it took Samsung longer to produce strong enough glass, marketed as Ultra Thin Glass (UTG), than a foldable smartphone itself. S Pen support for the Galaxy Z Fold3 remains limited, though. Specifically, Samsung has developed a special 'Galaxy Z Fold3 5G S Pen for Fold' with much softer tips than the S Pen in old Galaxy Note handsets or the new Galaxy S22 Ultra.
According to reports from South Korea, Samsung may be developing superior UTG for this year's Galaxy Z Fold4. Purportedly, South Korean supply chains have received details about a new harder and more durable UTG type, although the exact specifications remain unknown currently. Still, it is unlikely that Samsung's latest UTG will be as strong or scratch resistant as alternatives from Corning, like Gorilla Glass Victus.
Samsung could be considering marketing its new UTG aggressively too. Reportedly, the company believes that this year's UTG is so different from that which it uses in the Galaxy Z Fold3, considered a minor change from the UTG found in the Galaxy Z Fold2. As such, Samsung may market the glass in the Galaxy Z Fold4 as 'Super UTG' or an equivalent.
Based on previous rumours, the Galaxy Z Fold 4 may arrive with a built-in S Pen too, mirroring Samsung's change from the Galaxy S21 Ultra to the Galaxy S22 Ultra. However, the company is not expected to reveal the Galaxy Z Fold4 until the autumn, presumably alongside the Galaxy Z Flip4.