It’s written in stone that neither the iPhone 6s nor the 6s Plus feature water-resistance of any kind, but it seems that Cupertino might have taken some precautions to make sure that your shiny new iOS phone will be less prone to water damage. We already showed you iFixit’s teardowns of both devices, and during the disassemblies, a peculiar adhesive strip around the lower parts of the devices’ displays grasped iFixit’s attention.

Although there is no hard-written proof, iFixit and sound logic both suggest that the purpose of said adhesive is to keep liquids out and not keep the display in place, since the latter is already secured with a number of screws. A closer inspection of the phones’ insides showed that both feature a 0.3mm-thin gasket encompassing the whole internal perimeter, positioned on the lip of the frame that is seating the front panel. In order to accommodate it, the latter has grown 0.3mm in comparison with the older iPhone 6/6 Plus.