A good investment - the Redmi K40 screen protector If you drop your phone, the screen of your phone is usually damaged in a fall. Unfortunately, such a mishap happens very often and quickly. The relief is then great, if you have covered the display with a Redmi K40 screen protector with 0.3mm bulletproof glass. Because repairs are tedious and expensive! The Redmi K40 bulletproof glass is ultra-thin with its 0.3mm and does not affect the functions of your phone in any way. Invest in the Redmi K40 screen protector with 0.3mm bulletproof glass and you won't have to worry about scratches and dirt on the screen anymore.