Waterproofing Xperia Z3 when reassembling?
OK now we have some very good guides for dissassebling the Xperia Z3 and Compact models.
But what do you guys recommend for assembly, to make the phones waterproof again?
All the guides I have read state that the Z3 Compact will not be waterproof after opening it. You can check this buy entering this code to access the service menu on the phone:
Then you go to Service Tests -> Pressure Sensor
Make sure the flaps for charge port and sim port are pressed in. Press down on the screen or just squeeze the phone and the pressure should change if the phone is waterproof. It does not change much but if it does not change then the phone is not waterproof.
I have changed the back cover on two phones. What I found out was that you must have an original back cover adhesive. Use it even if the back cover comes with adhesive. Check on Ebay for "xperia z3 compact adhesive". If you are changing the LCD you must buy the front adhesive. The second time I used the original adhesive and the pressure test was successful.
I am not sure how much the pressure should rise on a new Xperia Z3 on the pressure test but I will go to a shop and test this on a new device. Then I can give a better idea of how much the pressure should rise on a new waterproof device :-)
I have an idea about using the heat gun on the back cover after assembling to maybe making the the adhesive more fluid and filling out all spaces. Not sure about this but the pressure test must be the final test anyway!
For the LCD I could not find any source for the LCD/digitizer only. It seems Sony original part consists of LCD/digitizer+frame assembly and not the LCD/digitizer separetly
##UPDATE on LCD and adhesive##
It is easy now to get hold of LCD/digitizer only. And I have good luck with replacing only the screen. Much cheaper. There are too many really cheap but crappy frame/LCD complete parts. I only recommend the original complete ones but they are really expensive.
I have experimented with different adhesives for screen and back glass. I find too much bad black adhesive, not being sticky enough and the screen or back coming off again. So I have tested the clear adhesive that requires heating. I use a heat mat or heat gun. This seems to be a good permanent solution. Like this search. Look for the clear one that says "requires heating".
##UPDATE on adhesive##
Like I commented I stopped using the black adhesive and always use the clear adhesive now. Use a heat plate since a heat gun can very easily damage the LCD.
I will give my answer for anyone looking for help on this, asle gave a great response on this answer by the way.
This will also help with those having issues with screens lifting etc.
Really, it is impossible for you to guarantee the phone will be as water resistant as it was coming out the factory, even if you use the same exact double sided adhesive that is used to assemble these phones, you need to remember that they also have the proper equipment when assembling these phones, and clean rooms for no dust and dirt etc. Providing a very compact seal.
But saying that, quite recently Sony have gone back on their warranty, and they now don't suggest taking their phones under water at all, I'm guessing this is because too many of their phones are coming back water damaged and they had to replace them under warranty, so they have probably changed it to avoid lawsuits and warranty replacements.
I have done many of these phones, and I don't have any issues repairing them, but I always say to the customer that the water resistance of the phone can not be guaranteed, and they must accept that or I refuse the repair, if they don't accept, I tell them to go to an authorised Sony repair centre.
A lot of people have a few issues with these repairs, the main one being SCREENS/BACK COVER LIFTING, this can happen for a few reasons, I will explain a few reasons why this can happen.
- Parts -
Using cheap/copy parts can cause lifting, this can be due to the fact that a lot of them don't meet the original parts standards, meaning it could be slightly bigger, slightly smaller, too thick or too thin, causing it to not fit correctly, it's also quite common on the third party screens, they use copy glass, these don't have the same coating/varnish underneath that allows the adhesive to grab the glass with a strong bond, so the adhesive eventually loses its bond with the glass.
- Frame/Housing -
This ones pretty simple, if the housing is too damaged/snapped or bent, you need to replace it, trying to put a screen on this will just result in a sloppy looking mess, that will fail extremely quickly.
- Cleaning -
This one is a big one, if you don't do this correctly, or don't do it at all, 100% of the time, you will get lifting issues.
What you need to do is clean off all the old adhesive, if all the old gunk is still there when applying new adhesive, the adhesive won't be able to grab the frame, causing a very weak bond, it also causes issues because the surface won't be as smooth.
You need to make sure to remove all of the old adhesive and gunk on the frame, using something to scrape it off, and use 99.9% isopropyl alcohol to clean up the entire frame and remove excess gunk, this de-greases the frame also, as dust, dirt, and oils from your fingers etc. cause a weak bond.
I also highly recommend going around the frame of the new screen and new back cover, as these will have oils on them, these are handled not only by you, but by the people who manufacture them, and by the people who send you the parts.
- Adhesive -
Using a good adhesive is a must, a lot of double sided adhesive rolls on eBay suck.
For the Xperia range, I always recommend getting the pre cut adhesive, not only are these usually high quality/original, they also take a lot less time to install.
When applying the double sided adhesive, you want to make sure to get it as flat as possible, air bubbles under the adhesive can also cause the bond to weaken.
A good place I have used in the past for adhesive is a company called Replacebase, they offer original Xperia pre cut adhesive with 12 months warranty.
NEVER USE super glue or any other form of liquid glue, these simply don't perform as well as double sided adhesive, you may get an initial good bond strength, but these will be very brittle, making the screen prone to falling out after a single drop, and most of the time the bond just breaks off by itself, you also run the risk of getting the liquid in to places it shouldn't be, causing further damage to the device.
- Heat -
There has always been the debate whether heating up the adhesive after everything has been applied makes it stronger.
Well, after Tesa and ifixit did a interview, they gave a lot of answers.
It doesn't make the max bond stronger, but, it does make the initial bond strength reach max strength in less time, if you have done all the initial preparation before applying the adhesive, you will usually get 80% initial bonding strength, and it takes usually 24 hours or so to reach max strength, heating up the adhesive isn't necessary, but, will help reach max strength in less time, as this causes the adhesive to get in to all the crevices to get that bond.
They recommend around 40c - 50c to warm the adhesive up.
- Clamps -
Clamping was also something that was debated, you get 80% initial strength from the bond just by using your fingers, but this would need to be even pressure along the whole surface, which can be tricky.
So personally and from all the repairs I've done, clamps are a big help, as the device can then be left for the bond to reach max strength, I usually leave it overnight, and the screen or back cover (whichever needs replacing) is always flush, and I don't get lifting issues, I provide 12 months warranty on the part replaced, and haven't had a single person come back with lifting issues.
If you have any questions, just comment and I will be sure to try and answer them! :-)
i changed my sony xperia z3 dual sim back cover and lcd screen with digitizer,I used black silicone glue and the phone is waterproof again and I'm using it under water since a while and no problems
@asle . Concerning the speaker,all you have to do is to use a thin nozzle to spread the silicone around the old speaker's sticker(the nylon sticker is usually found glued to the screen)hope you noticed it.you can also use a medical syringe to dispense the silicone on it.Be very careful not to mess it with extra silicone.I did not do ant pressure test because I was very sure that my xperia z3 is waterproof again.I used it in water several times and still working.Note:this is my second time replacing the screen.
Does anybody know of any YouTube videos to remove back and front cover as I have just had my phone repair and they have not sealed it correctly?
Hello guys, Great advices by the way.
I need to change my front since it was broken and the digitalizer stopped working.
I am thinking of using the black silicone glue as said above, but I don´t really know how to apply it.
Also, do you recommend getting the front Lcd + digitalizer with BEZEL or without ?
Thank you so much !
I read somewhere that applying 2 adhesive bond tapes will help to avoid the screen coming off of the device.
Did anyone of you check this? Does it help?
I investigated this problem and came to the following conclusion. The display flat cable is lose when the screen arrives. You need to glue this part of flatcable with components with thin double sided glue tape 100% flat/tight to the back of the screen. Otherwise this cable with components will put a constant (small) pressure on the top of the screen to push it "open" . The chinese screens / displays have a thicker display glued to the touch screen so the space inside the frame is not enough. You need to double the adhesive seal for those screens (already mentioned some were above)