I've used this brand multiple times on iPhones, highly recommend it, install on new phone right from box, it's factory clean. Seriously it's simple to install. Go to a counter with good lighting, remove the plastic from your phone %26 from your glass cover, start at the top where the cut out is on the I 14. Use your fingers on the side of the iPhone make sure you're going on straight. Once your certain glass cover is properly placed, literally just drop it on .. .watch the air leave and the connection between glass and cover is magical. Seriously starting in the middle push any air bubbles to the edge. I have never had an issue.. this was a purchase to replace the cover I put on my iPhone 14. I chipped the corner from dropping the phone., I took the alcohol prep and cleaned just around the edge BEFORE I remove the old glass. Remember underneath I put on that glass cover from factory.. after I clean the edge with an alcohol prep, I used a little cloth provided to dry. Start at top carefully remove the broken cover. Examine your phone carefully, DO NOT touched the glass, if any of the edges look like they need to be cleaned. Use the little shammy around the edges only. Carefully apply your new cover. Again, you should see the magic of the glass cover sticking to the glass of your iPhone. I wish I had a way to video it. I promise you can do this. It's easy just follow directions.. remember that factory seal you will never get that clean again. I never have any bubbles or problems with this glass. These are a must have to protect your investment.. picture is a screenshot of how clean my glass cover is absolutely no bubbles,.