"original LCD for Z3 and z3 compact is thinner than china LCD thats why it can't be ""normally"" mounted in original frame. Digitizer must be glued to frame in middle frame also. IN the beginning, also sony realized if they will use only glue tape for z3 frame it will not hold like in z/z1/z2 model so they decide to use some kind of silicone glue and glue this digiitzer to frame with this glue not with tape. we must find what kind of glue sony used for frame or you can buy lcd+digi in frame which will be also glued by china workers.
Sony for Z3 lcd made black thin protection foil to prevent glue to run into LCD.
I start post about it in XDA forum, Z3 Q&A maybe somebody will show some light on it."
"For the Z3's I've always used what we generally refer to as 'red tape'. It's a strong-bonding clear double stick adhesive. There WILL BE LIGHT LEAKING FROM THE EDGES. It's simply because the original adhesive (glue) pulls the screen down more tightly and it's opaque. The clear adhesive isn't, but it holds very well. The same thing is common with the LG G series phones. I get all of my red tape from Etechparts.com. Use a little heat after (I use 65C for 15 mins on my heat plate) to help the adhesive bond to all of the surfaces correctly and clamp it tight while the adhesive cools.
For the Galaxy S5's and especially the Note 4's (which are notorious for coming loose) you have to get high quality adhesive. The stuff on Ebay won't cut it. I've gone to Etradesupply.com for all of my Samsung adhesive needs. I've even tested their S5 adhesives with the water test. They retain the water resistance as long as the frame isn't tweaked. Again, 65C for 15 mins on the hot plate after, clamp and let cool.
I've noticed the largest difference between a screen staying or lifting on me a few days later is the heat. When the adhesive heats, it gets pressed outward, applying to the whole surface. Then clamps for cooling! If you don't, the heat will just loosen it. If you clamp it, it spreads the adhesive out further, and the cooling contracts it, sucking the screen down to the frame. Great method for iPads too!"
pre-apply the tape so that that it overhangs the edge of the lcd glass, use a VERY sharp exacto blade to trim off the excess. takes patience but provides a good, tight, sticky finish.
Alexander, I don't have any experience with repairing Sony Xperia screens. I have done a few Samsung Galaxy S5 and Note 4's. I'm not a pro by any means...I just do it for friends and family. Would you mind sharing how you're able to get the Samsung screens to stick to the housing? The pre-cut adhesive tapes I bought from ebay are not as strong as the original ones. Not even sure if anyone sells the original ones. Thank you!
