Let’s see, quick search on Titanium...Why use titanium on throwaway devices that can’t get upgraded? Recycling isn’t enough we need to Reuse products
Titanium metal connects well with bone, so it has found surgical applications such as in joint replacements (especially hip joints) and tooth implants. The largest use of titanium is in the form of titanium(IV) oxide. It is extensively used as a pigment in house paint, artists' paint, plastics, enamels and paper.
It appears that titanium is MOSTLY used in devices that can’t get upgraded.