same thing happened to me, and I had to reseat the cable connecting the screen to the phone. The first time, the phone vibrated but the screen stayed black.

The cover and screw went back in even though the cable was not fully seated in the socket, or was possibly off to the side. I was concerned b/c instructions said not to touch screen during first power on, and I thought the screen might turn on when the cable was reconnected, but it did not - maybe the phone turned itself back off since no screen was attached?

Once I reseated the cable the screen turned on when the phone vibrated, then I turned it off and sealed it back up. If you already closed up the phone, you might be able to warm it up, slice the adhesive, and pull the screen back off to get to the cable and reseat it. Not sure if the adhesive would restick, but it is pretty sticky, so worth a shot, or maybe someone can suggest something else besides ordering another OEM adhesive.

I was able to successfully change my screen, but I would not have been able to complete without reading others' comments.

The ribbon cable bounced out of the socket as soon as I removed the torx screw, so be careful not to lose the screw in the process. Be sure to snap the cable back into the socket securely before screwing the cover back on with the torx screw - I thought I had it in place the first time, and the cover and screw went back together, but the screen did not work until I reseated the cable.

I am sure my phone is no longer water resistant b/c I had issues with the adhesive stretching, sticking off center, the plastic getting underneath it, etc, but I still got enough of it in close enough to the right places to keep the screen on, and it looks fine.

Definitely remove the cover on the inside of the screen over the selfie camera before installing the screen. Install the driver to be able to complete the fingerprint calibration, then restart the phone a couple of times for it to start working.