Samsung hinge redesign may ripple across foldables
Reports say Samsung is developing a thinner hinge for a Galaxy Z TriFold 2 successor, a mechanical refinement that observers expect will influence the broader foldable hinge engineering race. ( )
A foldable phone bends around a hinge, and that hinge sets the device’s thickness, weight and screen crease. Samsung is now reportedly redesigning that part for a second Galaxy Z TriFold. (androidauthority.com) Android Authority and SamMobile both reported on April 17 and April 18 that Samsung is developing an “entirely new hinge solution” for a TriFold successor, citing supply-chain information and a Korean tipster report. The aim is a thinner device than the first Galaxy Z TriFold. (androidauthority.com, sammobile.com) Samsung’s current Galaxy Z TriFold is 12.9 millimeters thick when folded and 3.9 millimeters at its thinnest point when unfolded, according to Samsung’s product page. Samsung says the phone uses dual-rail hinges and a titanium hinge housing. (samsung.com) The hinge is the main packaging problem in a foldable: it has to let the screen bend, close the gap between halves, and survive repeated opening and closing. Samsung said last year that the Galaxy Z Fold7’s third-generation Armor FlexHinge was 27% thinner and 43% lighter than the prior version. (news.samsung.com) That thinner-hinge push has already changed Samsung’s book-style foldables. The Galaxy Z Fold7 measures 8.9 millimeters folded and 4.2 millimeters unfolded, down from 17.1 millimeters for the original Galaxy Fold in 2019, according to Samsung and Samsung Mobile Press. (samsung.com, samsungmobilepress.com) The TriFold adds a second bend, so Samsung has to fit more moving parts into a body that still needs to slip into a pocket. Samsung markets the current model as a 10-inch device when open, which makes hinge size and weight harder to hide than on a standard foldable. (samsung.com) SamMobile reported that work on the TriFold 2 hinge could also benefit Samsung’s other Galaxy Z models, because the company is refining hinge engineering across the lineup. That matches Samsung’s recent pattern of moving hinge and display-layer changes from one foldable generation into the next. (sammobile.com, news.samsung.com) The report is still a rumor, and Samsung has not announced a launch date or confirmed a TriFold successor. But in foldables, the hinge is the product, and Samsung appears to be spending another cycle shaving millimeters off the part users feel every time they open the phone. (androidauthority.com, sammobile.com)
