Does Corning's mobile phone case contain lithium? how much is it?

Corning mobile phone case contains 37% lithium. Cover glass is mainly divided into soda-lime silicate glass, soda-alumina silicate glass and lithium-alumina silicate glass according to chemical composition. According to the chemical strengthening process, it can be divided into one-step chemical strengthening glass and two-step chemical strengthening glass. The difference between different materials and process combinations is mainly in scratch resistance and impact resistance.