When choosing a repair shop for iPhone screen replacements, make sure to choose a certified Apple repair shop or check reviews before going to a third-party location. Find out what type of screen they plan to use as a replacement (OEM screens are better quality and more durable) and look for a shop that offers a limited warranty on their service (one year on parts and labor). A shop that doesn't offer a warranty may use aftermarket screens which are prone to defects. Top Tek System provides a list of things to check before repairing your screen.