Will the Apple Watch sapphire digitizer work on apple watch sport?

Yes, they have the same digitizer and lcd are interchangeable the only different is the surface mount crystal which doesn't effect performance.

Hey charkel, It should also be mentioned that the two parts may be interchangeable, but the water resistance of the device may possibly be at risk with this replacement. Please check out this post for more details.

I just replaced my friend's Apple Watch Sport screen with a sapphire crystal screen of an Apple Watch I bought on eBay, which was locked to an Apple ID. The repair was challenging and I bought the adhesive tape to adhere back the screen. Not sure if it's waterproof but the Apple Watch works fine with the new screen. Just FYI... I tried to repair just the glass on the screen with no luck. Replacing just the glass on the Apple Watch is a nightmare and not worth the trouble. Buy an Apple Watch on eBay like I did and replace the whole screen.

I am Porlah iRepair and offer using used Apple OEM screens because sometimes the screens alone are worth more than the watch. I would like to pinpoint that series 2 and 3 screens are not interchangeable. I experimented and they wont interchange even though they are similar. Stainless Steel and ceramic watches have different types of screens because the screens are a two piece. A regular replacement will still work. Also our goal is to maintain a watches Apple originality so it’ll be best to try to use plastic tools instead of metal.