Samsung Galaxy A21s Glass Screen Replacement Premium Repair Kit SM-A217 SM-A217F/DS A217M A217M/DS

This complete kit includes everything you will need to successfully complete your Samsung Galaxy A21s screen replacement. It includes the front outer glass screen, expertly chosen tools, and laser-cut adhesive for a perfect bond.

This screen has been manufactured to provide a precision fit to your phone and features scratch and shatter resistant glass.

This is considered an intermediate level of repair and will require the glass to be separated from the LCD (not included). 

Still,  this can be a cost saving repair; you'll feel great completing this repair, and you'll be saving money by doing it yourself.