Titanium is stronger and harder than aluminum so it can withstand more pressure. It’s also corrosion-resistant and looks more premium.
Titanium is costlier than aluminum and if Samsung does indeed decide to switch to it, it might make the Galaxy S24 Ultra more expensive than the Galaxy S23 Ultra, which is already pretty pricey at $1,200.
The same won’t apply to the Galaxy S24 Ultra. Titanium is denser than aluminum, and the Galaxy S23 Ultra already weighs 234 grams. The use of titanium could make the successor heavier and thus we aren’t sure if it would be a good idea for Samsung to make this change.
Given that the Galaxy Z Fold 5 was announced a little earlier than usual, Samsung may announce the Galaxy S24 in January instead of February, but we are only speculating here.