Great video, saved me money on getting my Z3 repaired, very professionally done too.

THAT LOOP! The music blends so well with the video.

well what can i say ,,,,,,,,,,,i watched so many video's b4 finding this one and this one done it for me thank you so much for taking the time to do this , helped me out so much . ive gone from a phone i was just about to through in the bin to one that works amazing now. many thanks

i fixed my phone' cam's issue because of your help, thank you much. God bless you.

and thats why i love Sony. the build quality is amazing

@victormarques8494

3 жыл бұрын

Wtf it’s awful

In 2022, this video is still useful.

This videos was amazing bro, thank U so much and pura vida!

@EricWitrigs

9 жыл бұрын

TETO MATARRITA GOMEZ Thx.

@MallV0lli0

9 жыл бұрын

+Wit Rigs your video shows a z3 which has been opened before. Not completely adequate

@EricWitrigs

9 жыл бұрын

MallV0lli0 We have done the teardown before so that we can make sure the correct steps when we capture a video.

@MallV0lli0

9 жыл бұрын

But then i think is pretty important to mention that the back cover is well glued on the battery.On Z3 and also Z2

@davidguetovevo2999

8 жыл бұрын

yeah

amazing... now i can manage to replace my own back cover :D, tqvm ... salam dari Indonesia...

Hi Wit Rigs, you've done a great job uploading this video. It's nice if you could make video for Xperia Z3 steel housing replacement.

@EricWitrigs

9 жыл бұрын

Eric Do you the middle frame replacement - www.witrigs.com/oem-middle-frame-for-sony-xperia-z3-gold? In the Z3 teardown video, we have separated the screen from the middle housing assembly. To replace the middle frame, just push out the metal shield and magnetic charging connector that is not hard.

Holy shit, best teardown video ever.

Pretty clear and straight forward. Good job

FYI everyone, the old screen flex and the main flex get brittle with age and tear easier than a thin piece of paper if you are not careful. I just needed to re-glue my screen but because I tore the flex cables, I had to buy a new screen and flex. Be very careful not to slip when unsticking the screen flex from the frame. Also, measure the thickness of the screen adhesive you use, because if it is more than 0.15mm, your screen will stick out.

After changing the screen I noticed problems in the Wi-Fi and Mobile Data does not work correctly

Amazing video! thank you very much, it helps a lot!

i hope there is a description of the name and function of each part....thx

i did it. i destroyed my z3

My Digitizer is shattered, and the screen is unresponsive to any touch, but the LCD seems to be perfectly fine. Do i get just the Digitizer or Both LCD w/ the Digitizer??

EXCELENTE...!! Desde Argentina, muchísimas gracias.

Can the phone still be waterproof after having any kind of replacements done? My front glass cracked, gonna have it repaired at an official shop, but I'm still curious

@amberlampz

8 жыл бұрын

+Atilla Akarsu If it's done by Sony, then it should be waterproof. If it's not then no, it will not be waterproof.

Hi thanks for uploading this! My wifi / bluetooth is broken after water damage so my question is where is the wifiboard located

hola muy bien te escribo desde colombia , excelente video

best so far

great job/ well done

next vedio tear down 1iii thanks... wit rings

Hi I replaced the screen on my Xperia Z3 D6603 turned it on and started using it but then I realized that the vibrator motor didn't work whatsoever. So I ordered a new power button/vibrator motor/mic assembly. Installed that, but it still doesn't work. How can I fix this?

I can't connect to charger and pc anyway. My phone is death. Can you help me? Please...

Helped mt a lot, thanks!

Hi! May i know which part is related to the network/simcard? My Z3 fell to the floor and I couldn't get a network right after. Wifi and bluetooth all works fine, no screen cracks too. So I wonder if i would just replace the network module it could make it to work again. Appreciate your advise!

Omg so its just piece of glue? im now afraid of taking it into the water :( Is it safe?

One of the electrical gold contacts has come away from my magnetic charging port, I use this port daily and really miss it, presumably it's a complete strip down to get to and replace it?

Can you just help me with one question. My z3 is have it's screen loose from one side showing light underneath it. Can I used glue to get it stuck back ? If yes what kind of glue should I go for ?

the ear piece speaker DOES NOT come out like that. go ahead and order one if you're going to be changing frames, it will disintegrate.

Hello ... My name is Ali, from Iraq .. I have a problem and I wish you to solve. I have a Sony Z- 3 was signed by me with water and I've stopped engaging screen and then I went to the phone repairman has told me that the device may have disrupted its screen instead of screen but also did not actuation . Please give me a solution , and Sony responded to my message , I tired and confused now !!!

Doing this now. You should really mention how well the battery sticks to the back panel.....

@EricWitrigs

8 жыл бұрын

OK, thanks for your kindly suggestion.

the signal cable plug is broken on the top motherboard is their anyway of fixing it

You done it nicely

Under the flex with the buttons are gold square double sided tape is this thermal or will any double sided tape do as a replacement

Hi, I wanna change the frame and black glass of my Z3, is there anything I should be very careful with while following your video ?

my sony z3 cant listen to loudspeaker when calling.. n cant record audio sound.. can i know what is actual problem?

where is led notification light located? mine is working but its fallen somewhere beneath the screen

my phone is a sony xperia z5premium. and few days ago I went to swimming pool, take a vew photos andmy phone is dead when I turn it on, its only vibrate (once) the phone heats up and the screen stay black. so I turn it back off again by using the small button inside the flap. what should I do? I already put it inside silica gel and uncooked rice for a day, nothing happen.

@EricWitrigs

8 жыл бұрын

+Rafi Mulia Please do not try to turn on again, I think there should be water inside. I suggest that you call Sony After-sale Service first because it is still in warranty, if not you can take it to repair shop to check it first.it is not safe to fix it by yourself.

How do you remove the magnetic connector to install into a new frame?

Hello, could you advise where is giroscopio sensor placed? Doesnt work, want to change.

Hi! Witrigs. My Z3 got water inside but it works perfectly fine except for the network signal. It indicates "No service". Eventhough I already inserted a sim card. Do you know what is the reason why it has no signal?

@gamithadithya4166

8 жыл бұрын

it's a common issue. you have to do a hardware repair

Hello, I have a question or two..if ya'll could help. At 1:17 Removing a clip .. i do not have that clip in mine.. At 1:26 disconnecting a cable .. I also do not have that in mine can you tell me what that is for? Also i just replaced my screen all went well, (except i cracked my back cover and messed up the ear speaker (speaker still works)) However - After I put it back together, I am not getting my wireless signal. I will assume I either did not put something back together properly or i damaged my antenna. I am told there are more than 1 antenna on this phone, can you point me in the right direction?

@MadZell

8 жыл бұрын

Good talk

I have a Sony Z3 device that has a lc failure and does it have a magnetic charger to charge it or a lc

is there a space between the magnetic charge port and the frame? the top of my phone has a small space, is there a problem with submerge the phone into the water?

@EricWitrigs

9 жыл бұрын

Ricardo Malo All edges are sealed. If there is a small seam, it may be out of waterproof.

Hi. I'm having problems with my Z3's GPS. I cannot get a fix on a satellite. Where is the part that controls the GPS? I'd like to replace. Do you sell it?

I opened the back and the battery is attached to the back cover? Could it be stuck on with glue?

@EricWitrigs

9 жыл бұрын

Nikita Rybalkin There is not adhesive between the battery and the back cover. You can place a 3M adhesive sticker or double face adhesive tape on the back of the battery, which will fasten the battery on the phone.

Took my phone in to get my screen replaced now my wifi has signal issues "weak even though im right by the router also my bluetooth headset works only if im like 3 feet from my phone when before i took it in I could be like 30 feet away, any idea on what they messed up?

@johnargue2977

7 жыл бұрын

Ive replaced these screens before. There is a anteena looking piece that looks like a sticker with flat wires on it, on rear glass that u need to transfer to new rear glass.new glass doesnt come with it.i bet it has to do with wifi .other people had same problem. Mine worked fine, i did transfer sticker.

@ericmelo9731

7 жыл бұрын

Ya thats what it needed. the guy figured it out after I dropped it off 3 times... never using that guy again

@bibhushanshrestha5815

7 жыл бұрын

I'm also having the same problem please tell me how to fix the wifi problem.

@bibhushanshrestha5815

7 жыл бұрын

Which type of sticker are you telling? :/

@ericmelo9731

7 жыл бұрын

The sticker in question is the one on the back phone cover... Its got gold connections that leads to ur wifi and blue tooth chip.

Thx so much that was very helpfull :-) one question, should battery stick to back cover or not? And How to avoid it

@EricWitrigs

8 жыл бұрын

+Patryk Rzepka No, battery stick on the mid frame, because there isn't sticker in the middle of back cover, you do not need to worry battery stick to back cover.

I noticed on the back of my z3 the glass comes up slightly on the right bottom corner (if looking at the back side) which means when I hold it with my left hand i can feel a slight scratching against that glass. All other sides are totally fine and comfortable.. Do you think I could fix this somehow? I can push it back down but it brings itself back up in a little while.. It worries me that this could ruin the waterproofing. It's not enough to fit anything (probably not even paper) in but I can feel the difference and see it close up.

@EricWitrigs

9 жыл бұрын

vexx506 There are two possible explanations for this problem. One is that the back cover adhesive sticker becomes weak. You can try to replace a new waterproof adhesive sticker. The other is the middle housing is out of shape due to over heat. If there is something wrong with the middle housing, we don't recommend you to replace it.

I have a question. If the nylon corner is cracked. Does it affect the waterproofing of the phone. Sorry for the bad english. Thanks

@EricWitrigs

9 жыл бұрын

Hafiz abdul rahman If a seam appears, it is not waterproof.

Do you have to replace the adhesive sticker around the edge on the inside of the screen after dismantling it?

@EricWitrigs

8 жыл бұрын

+OrbitalFrameGaming yes ,you need a new adhesive sticker for the screen.

Hola soy de Costa Rica mi xperia Z3 se me cayo y daño la tapa posterior en una de las esquinas y deseo cambiar la tapa, al cambiar la tapa pierde la protección al agua, lo podre meter después del cambio debajo del agua, saludos gracias por la respuesta. Hello I am from Costa Rica Z3 my xperia I fell and hurt the back cover in one corner and want to change the cover to flip the switch loses water protection, I will be able meter after changing underwater, thanks for greetings response.

i replaced my screen but when i swipe it does not work, image works and sound . what can i do to fix it ?

@EricWitrigs

9 жыл бұрын

daniel paz Plz check if all the ralated connecotrs have been connected correctly.

And what do we do if we are not a guitarist?

Hi, I need some help with my Xperia Z3, well I was testing if it was really waterprof and the water got inside anyway(pool water), the fact is that everything I see it's a black screen and nothing else, but when I try to charge it the led goes on which I supose that indicates that it's charging, I don't know. So what I should do?, warranty stills valid I bought the phone only 5 months ago, the warranty will cover that?(I'm almost sure that it wasn't my foul(all the opens were closed properly) so should be a manufacturing error)

@tincipan7988

9 жыл бұрын

Mihai Copil I have the same problem. Red light goes on when i charge it but thats all. I hope warranty cover that.

Sorry for consecutive questions but seems like you're the expert. I have a screen problem; the backlight turns on/off but nothing is displayed on screen, pitch black. I took Z3 apart and jiggled the LCD connector from the Main flex. I tried disconnecting and reconnecting it, also on the mother board(It's the big wide one, yes?) but still, only backlight. Does this mean that the problem is with the motherboard? Everything else works; the sound comes out and i can receive calls etc, just the screen pitch black. Can you figure what might be wrong? Thank you

@amberlampz

8 жыл бұрын

+祁堂隼斗 try another screen, if you still have the same problem, it is a problem with the motherboard.

Thanks for this awesome video, can you help me with the following? Many people are concern about Pressure Test on the Z3/Z3c devices since they seem to have some sort of pressure equalization valve, and apparently in the Z3 is located behind the Landyard Hole... can you confirm if this is true? Is there some kind of valve or membrane behind that hole?

@EricWitrigs

9 жыл бұрын

buccob Sorry. We have no plan to do this test.

Hi, thanks for the great video. Is it hard to split digitizer from LCD-display and how does it work? Thanks

@EricWitrigs

9 жыл бұрын

Kieckfunk It is hard to separate the digitizer from LCD and compact them together. We have not plan to do the video .

I'm scared to do this. I don't wanna make things get worst xD

can i replace Xperia z3 motherboard to Xperia z3 dual Sim. phone

Great video of the Sony Xpera Z3 assembly. I have a problem that you might be able to help me with. I dropped the Z3 and it made a small crack on the bottom right hand corner of the display. The touch stopped working immediately, few hours later the lcd gave out and all that comes on is the back light. To my luck both the power and volume buttons are now not working. I'm tempted to buy the digitizer/lcd assembly and perform this repair, but i'm worried about the power button not working any thoughts?

@EricWitrigs

9 жыл бұрын

raymundo meza The power and volume buttons problem happened because the main flex cable connect got loosened or was broken.

@EricWitrigs

9 жыл бұрын

raymundo meza Xperia Z3 main flex :www.witrigs.com/oem-main-flex-for-sony-xperia-z3

Why the micro sd slot is on the left side? In my Z3 it's on the right side..

@EricWitrigs

9 жыл бұрын

+Dario Corridori There are some differences between the cover flaps for Xperia Z3 and Xperia Z3 Dual:1. Xperia Z3: SIM & SD card cover is on the right side of the phone while USB port cover is on the left. The former is longer than the latter.2. Xperia Z3 Dual: SIM card cover is on the right side of the phone while SD & USB port cover is on the left.3. The SD & USB port cover for Xperia Z3 Dual is longer than the USB port cover for Xperia Z3.In this video, it is actually a xperia z3 dual phone.

Hi. Does anyone know were I can find or what the part at 4:36 is? I'm really struggling to find it. Thanks!

@EricWitrigs

9 жыл бұрын

Sorry. We have not this part.

Hi, can you please tell me what that piece is exactly at 2.30 and what is it for?

@wody21

7 жыл бұрын

That must be one of the front facing speakers (the one, which is on the bottom of the phone). That thing is a tiny loudspeaker, so when You watch a video, or play music on your phone, then these two speakers are working together in order to hear the sound of the video/music.

I have one question.Where is water damage sticker ?

@EricWitrigs

9 жыл бұрын

Abdullah Özdemir It is on the waterproof test holes - the cover flap

I replaced my z3's screen. Now the wifi is having problem and I need to go near to the router to use it. Please tell me how to fix it. Please reply

@abdulkhalil2833

6 жыл бұрын

Screen strip of z3 model are same or different anybody canhelp pls

Hi I tested my z3 that I just bought under the faucet for not even 1 min (for the simple reason of my curiosity) something I should not have done :( .. after about 15 minutes of impounding the screen was off I tried to restart it I felt the vibration but still black screen + red LED that lights up and then goes off, I removed the protective film and I turned it on I saw the red LED and Sony hardly distinguish which was displayed and then it disappeared I turned it off by the yellow button and I left it for a night .. in the morning I tried to light it, but it did not work .. I do not know what to do did it take water, the screen that has grilled or is it the motherboard that was damaged I do not even know if it's fixable .. have you any answers for me ps: I ' have no guarantee

@EricWitrigs

8 жыл бұрын

There must be water inside. you can try to dry the phone and restart it later. but now I prefer you take the phone to repair shop, and do not to turn it on again.

@souhilabouabdelli7003

8 жыл бұрын

thank you for the answer .. I will take it to repair hoping that it 'll be fixed :)

@souhilabouabdelli7003

8 жыл бұрын

they told me that the motherboard is damaged .. so I am wondering if it was really damaged would I still hear the vibrations ?

HI, if I only open the back, is it still waterproof.

@EricWitrigs

8 жыл бұрын

+Tam Pham Sorry, No, it is hard to make it waterproof again.

When you say "screen" at step 13, is that The digitizer or also the LCD? Because I have a cracked screen but the display works fine; only that the touch sensor is not working where the glass(i think digitizer) is cracked. If I want to replace ONLY the glass, is that possible? In the way you did at step 13?

@amberlampz

8 жыл бұрын

+祁堂隼斗 it's basically impossible, not worth your time trying to replace only the glass.

@AAA502ify

8 жыл бұрын

yep i tried and haha it is impossible.oh lord i just hate the Z3 so much it breaks so easily ..too easily.

it's very cool

hey Wit ! thanks for this great guide , I've a Q for you about bending on chase up on magmatic charge , is it possible to fix it back ? it's hardly noticeable , what do you advice me about that ? shall I tear down the device and trying some heating on chase to get it back ? or putting some heavy thing on the edges ? thanks .

@EricWitrigs

9 жыл бұрын

Libyan Guy Which part is bent, the magnetic charging port or the middle frame?

@Bosss087_MobileHD

9 жыл бұрын

the middle frame , the all side looks like an arc .

@EricWitrigs

9 жыл бұрын

Libyan Guy The middle frame is hard, which is made from aluminium alloy and plastic. I don't think it can become straight after heating or compacting by heavy things. The only way is to replace a new middle frame.But replacing the middle frame means you have to tear down the whole phone including all components, which is at great risk. You said it is hardly noticeable. So I advice you to let it go.

@Bosss087_MobileHD

9 жыл бұрын

thanks bro , actually that's what I'm thinking too,to leave it on it's condition, And Go on man your videos are great :) .

at 2:06 what part is that i need that for my z3

How do you do this for an z3 compact? I broke it after about 2 days, the screen cracked, and the touch is not working. Any advice?

@EricWitrigs

9 жыл бұрын

Marte Haavardsholm You need to replace the LCD screen with digitizer.www.witrigs.com/oem-lcd-with-digitizer-for-sony-xperia-z3-compact-white We are going to upload the Xperia Z3 Compact repair tutorial in two weeks.

@robertlipowski33

9 жыл бұрын

Wit Rigs Better to buy it with frame. Cheaper and so easy to fix.

Can you replace z3 rear camera with new z5 rear camera?

@ytdark7993

8 жыл бұрын

Yes

I want this matal pattery

please i want a motherbord for xperia z3 dual where can i find one thanks

@amberlampz

8 жыл бұрын

+‫عبدالرحمن البنا‬‎ ebay. You'll probably need to buy a broken xperia z3 dual and then remove the motherboard from that and swap it into your phone.

@user-qd1sy7fp2t

8 жыл бұрын

+amberlampz thank yo very much I will try to do that

what heater do you use to melt the glue?

@EricWitrigs

6 жыл бұрын

220V heater www.witrigs.com/best-electronic-heat-gun-blue

I think my mom dropped her phone but there is no crack. However, one corner of the screen's adhesive is loose. I can easily lift it up from the frame. There is a small section of the touch screen not sensing motion unless i press it down really hard. Is it a bad digitize or a bad screen?

@EricWitrigs

7 жыл бұрын

Does your phone display works well? an which section of the touch screen was not sense well?

@tougefreak

7 жыл бұрын

The screen display is normal and working perfectly. it's the lower middle. Like when you have to answer a call you swipe the answer button from left to right . But half way swiping to right, the button just lose sensing and bounce back to the left, when I try to use hand writing, that particular area in the middle would just becomes blank , unless I press it down super hard and drag it across but it's not a straight line either.

@EricWitrigs

7 жыл бұрын

I see, the touch screen was damaged, try replace a new screen with digitizer. Here is the OEM screen for Xperia Z3 www.witrigs.com/oem-lcd-with-digitizer-for-sony-xperia-z3-black Let me know if there's anything I can help :-)

@twosidesbaked8689

6 жыл бұрын

Hey I have same Problem but I never "droped" my mobile phone the adhesive just loosened and I can see inside, and fast foward like 1 year my screen started to stop "reacting" and would randomly work and then stop working untill I shake it couple of times and then back to working untill it just stopped working even after shaking the phone, so right now I know the screen is working perfectly fine and touch screen is okay, I hope this is the "pin connector" problem, do you maybe have any insights on this one ?

from where can I get the Sony Z3 Dual mother board and what is the price AED?

@EricWitrigs

8 жыл бұрын

I have no idea.

So I was washing my Z3 , and some water got into it ( Not the first time), now all I can see is a black screen, but still hear sounds; Do you have any idea what's the problem here?

@EricWitrigs

9 жыл бұрын

Mohamad Natour It is hard to say that. The lcd screen or the motherboard maybe broken. Can the phone still do other works such as answering the incoming calls or connecting to the PC?

@mhmdd

9 жыл бұрын

Wit Rigs Yeah, it still can connect and readable on PC. ((Thnx for the replay))

@EricWitrigs

9 жыл бұрын

Mohamad Natour Then the lcd screen may be broken.

@tincipan7988

9 жыл бұрын

Wit Rigs Any idea how much would motherboard cost?

@samiihahsooka4073

8 жыл бұрын

hello i have the same prob. blank screen. you should have put it in a box of raw rice for 2/3 days just after it got water. mine happened the same. it works just fine now

where are the heatpipes?

@RisinT96

9 жыл бұрын

this is the z3... not the z5....

The tear down the earpiece step is just ridiculous... ripped the earpiece in 2 because it was glued so strong

is it still waterproof when you assemble it again?

@EricWitrigs

8 жыл бұрын

+Ignacio Verdugo hard to reassure its water resistance if it's repaired by DIY work, it can be waterproof again when repairing by original replacements and professional maintenance.

@amberlampz

8 жыл бұрын

+Ignacio Verdugo no.

thanks ;)

What is the pice on 2:56 called, i need it.

@EricWitrigs

7 жыл бұрын

Sorry to tell you that it is not available.

wow !!

Hi I replaced my lcd now my mic doesnt work any help

@vakulasan4613

3 жыл бұрын

Hi. Have you solved your problem? I have the same problem. I will be glad, if you will answer me. Thanks in advance. I do not know what to do. Please help.

can't get a signal on my xperia z3 just says no Service can anyone help please

@TheMaTTOne

8 жыл бұрын

I don't know if you still need help (you posted your comment few months ago), but restarting phone few times, putting phone card in and out and changing things in network settings helped to me. If it doesn't help to you, try to take your phone to some service. :)

@albertomikulan4702

8 жыл бұрын

Maybe there's a problem with the signal cable. The connectors could be loose and don't contact the motherboard properly.

Can you use a Z2 3300 mah battery in the z3?

@EricWitrigs

9 жыл бұрын

renegadephalanx The z3 battery is smaller ( at 3100 mAh), there may occur some problems and instability if use a Z2.

わかりやすい

THANKU

Good but tear down should start from disconnecting battery.

@EricWitrigs

9 жыл бұрын

Robert Lipowski All the steps are to make sure to remove the battery safely.

@robertlipowski33

9 жыл бұрын

Wit Rigs Not really. Battery is not connected to bottom speaker or any other part. It should be disconnected and removed in first place to avoid short circuit.

@EricWitrigs

9 жыл бұрын

Robert Lipowski Thx for your suggestion.

Thanks for sharing the video. Could you please put annotation which specific parts are listed below 1. Relay FPC PBA Row 2. Gore Sheet (1st mic) 3. Holder Mic sub assembly 4. Adhesive Rear Panel 5. Cushion Battery 6. Adhesive Battery Front 7. Adhesive Battery Rear those parts needs to be replaced for flickering issue as discuss here talk.sonymobile.com/t5/Xperia-Z3-Z3-Dual/Screen-flickering-colours-like-static/td-p/840309/page/4 How much would it cost for those listed? thanks

@EricWitrigs

9 жыл бұрын

Z3 Dual User Flicker 4.Adhesive Rear Panel :$ 3.99 - www.witrigs.com/replacement-parts-for-sony-xperia-z3 . We have not the parts about the logic board.

ok. so I'd like to just say it wasn't a complete tear down , you didn't remove the nylon flaps, nor the nylon corners.. I desperately desperately need a video on how to replace the nylon flaps and how to replace the nylon corners.. I have just ordered myself replacements. and I cannot find a video anywhere and your teardown and reassembly videos are the best, can you please post a video of replacing the flaps and corners please!?

@Catwalkjohn

8 жыл бұрын

stand slightly corrected you do have a video of the flaps but I need a video on the nylon corners if you could.

@HIIMUsc

6 жыл бұрын

why not buying an entirely new frame?

Ok, now put it all back

@EricWitrigs

9 жыл бұрын

Anita Lacarac Here is the Sony Xperia Z3 assembly video - kzread.info/dash/bejne/m3qgw7qdoZayk6w.html

انا اشتريته وعجبنئ امكانيات الجهاز

Where's the vibrator in z3 located

@EricWitrigs

7 жыл бұрын

At the bottom, beside the Loudspeaker bracket

@yannolove1335

7 жыл бұрын

Wit Rigs left or right mine doesn't work don't know what to do any suggestion

@EricWitrigs

7 жыл бұрын

If you face the screen then the vibrator is on the right, did you drop your device before? or is there anything happen to it, before it didn't work?

@yannolove1335

7 жыл бұрын

Wit Rigs hi where's the microphone ? my mic doesnt work