Use super glue. Cyanoacrylate glue, better known as super glue, can seal small cracks. Use as little as possible, and carefully wipe up excess glue with a cotton swab or cloth. If the touchscreen still works, you can replace the glass yourself for about $10-$20. The tools required will depend on your type of phone.

The best way to repair your cracked screen without risking further damage to the phone is to bring it to a professional repair service. The trained technicians at Cell Phone Repair can fix your screen quickly and safely. If you visit a local CPR store, common repairs can be done on-site while you wait.