Samsung has decided to implement a completely new strategy when it comes to screen protection on the upcoming generation of its foldable phones.
According to the latest reportsthe company plans to use different thicknesses of ultra-thin glass (UTG) for the models Galaxy Z Fold8 (wider version) and flagship Galaxy Z Fold8 Ultra. Both premium devices should debut already this July, traditionally following the premiere of a new model Galaxy Z Flip8.
What is UTG and why is glass thickness important?
Ultra-thin glass, or UTG, is the key top protective layer of every modern flexible AMOLED screen. His main role is twofold. To protect the sensitive panel from damage during falls and at the same time try to minimize the crease where the phone folds.
The engineering decision for the new series brings a rather interesting technical paradox:
- Galaxy Z Fold8 (wide): This model will get a much thicker glass layer of even 60 micrometers (μm)
- Galaxy Z Fold8 Ultra: On the other hand, the more expensive and thinner Ultra will use a thinner UTG layer of 45 micrometers, matching the thickness found on the current model Galaxy Z Fold7.
A compromise between aesthetics and durability
The main reason for installing thicker glass on the wider Galaxy Z Fold8 is of an aesthetic nature. The thicker layer will drastically reduce the visibility and tangibility of the crease in the middle of the screen compared to the Ultra model. Users will have a feeling under their fingers that is much closer to classic, flat screens.
However, this decision brings with it certain engineering challenges. Although it hides the crease more successfully, thicker glass is naturally less flexible. This means that the internal structure of the material suffers significantly greater mechanical stress and pressure every time the device is reassembled and disassembled. This, in theory, can affect its lifespan. We’ll see how Samsung handled it when the device premieres.
If the thicker layer of glass proves to be a complete hit in practice and successfully passes the user’s durability tests, Samsung reportedly plans to implement the same 60 micrometer technology on the successor to the Fold8 Ultra model, but only in 2027.