How can I repair my iPhone screen properly?

Episode 1297 (2:07:17)

Sandra from Corona, CA
Apple iPhone 6s and 6s Plus

Sandra dropped her mobile phone and had the screen fixed at Staples. Now Siri doesn't work, and neither does the speaker. Leo says that the problem with third party repair sites. Leo says that Apple's attitude takes away our right to repair and it's hard for third parties to learn how to repair the phone properly. Had she brought it back to Apple, it would have been either repaired or replaced properly. At this point, her only option is to bring it back to Staples until it gets fixed properly.