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How to remove stains and streaks from the display of the zte v987 smartphone?

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  • #1 17086462
    8850
    Level 21  
    Posts: 1167
    Help: 1
    Rate: 285
    Hey. The display of the zte v987 smartphone was cleaned with isopropyl alcohol and some of this liquid got somewhere from the bottom / back making stains (streaks). Is it enough to replace the glass / touch to solve this problem? You can see a white spot and streaks.

    Has liquid got between the lcd and the touch / glass or damaged the lcd display? Or maybe it is enough to unstick the touch and the LCD and clean both and stick it back?

    How to remove stains and streaks from the display of the zte v987 smartphone? How to remove stains and streaks from the display of the zte v987 smartphone? How to remove stains and streaks from the display of the zte v987 smartphone? How to remove stains and streaks from the display of the zte v987 smartphone?
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    #2 17086527
    gruktel

    Level 32  
    Posts: 1553
    Help: 200
    Rate: 309
    Only LCD and touch replacement.
    Company Account:
    GRUK Krystian Grudzień
    Chwałki 46, Sandomierz, 27-600
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    #3 17086542
    E8600
    Level 41  
    Posts: 8862
    Help: 525
    Rate: 2475
    The flooding is on the foil polarizing the display backlight. If it's pure IPA then maybe it will evaporate a little and reduce the stain. Magicians can unstick the display and clean it, but it will not give a perfect effect. For it to be perfect, only an exchange comes into play.
  • #4 17086577
    8850
    Level 21  
    Posts: 1167
    Help: 1
    Rate: 285
    This is pure IPA, the condition is about 2 weeks after flooding. I tried to heat the front and sides with hot water, but it didn't work. Hence, I was wondering if it makes sense to stick it up because fast / touch is about PLN 30, but LCD + glass is about PLN 150 and it does not pay off anymore because the phone is only slightly more than this amount.
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    #5 17086594
    E8600
    Level 41  
    Posts: 8862
    Help: 525
    Rate: 2475
    So it will not evaporate anymore. The stain is on the polarizing foil, a typical telltale is that the stains "decrease" depending on the angle of viewing the LCD.
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  • #6 17087174
    8850
    Level 21  
    Posts: 1167
    Help: 1
    Rate: 285
    There is no substance in which you can bathe the LCD screen removed from the phone that will clean the foil?
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    #7 17087274
    sagem90
    Level 17  
    Posts: 258
    Help: 22
    Rate: 85
    You need to disassemble the lcd or the lcd layer and you can wash the foil with extraction gasoline. The hardest thing is to remove the LCD from the body.
    Ps, instead of cleaning, you can also translate layers from a damaged LCD (compact, cracked)
  • #8 17087307
    8850
    Level 21  
    Posts: 1167
    Help: 1
    Rate: 285
    This is not a stupid idea with a translation because I have a second such phone where the windshield is broken into small pieces, the question is whether you need to remove the touch from the lcd display on the way?
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    #9 17088154
    rabus40
    Level 11  
    Posts: 38
    Help: 1
    Rate: 14
    Hello!
    Where did these ideas come from with the removal of the glass from the LCD.
    Take out the lcd with spots and heat to 65 ° C. Download the highlight and put a new one. Youtube is full of backlight repair / Change videos
  • #10 17088560
    8850
    Level 21  
    Posts: 1167
    Help: 1
    Rate: 285
    "Take out the lcd with spots, heat it to 65 ° C. Download the backlight and put a new one on. Youtube is full of backlight repair / Change videos"

    repair but what? lcd what should i look for? What password? there are glass replacements and lcd replacements, lighting repair is the password?
  • Helpful post
    #11 17089067
    zolwik1985
    Level 16  
    Posts: 136
    Help: 23
    Rate: 22
    It says "backlight repair"
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    #12 17089135
    E8600
    Level 41  
    Posts: 8862
    Help: 525
    Rate: 2475
    Start with rice for the disassembled display.

    [youtube]https://www.youtube.com/watch?v=1-ZDbZID_lE
    [/youtube]
    For the less patient.





    If these 2 methods do not work, try to replace the polarizing foil.

    [youtube]https://www.youtube.com/watch?v=IjBcCUKc7DM
    [/youtube]

    When replacing the foil, I advise you to be careful with greasy fingers.
  • #13 17095490
    8850
    Level 21  
    Posts: 1167
    Help: 1
    Rate: 285
    Thank you for the links, I click helped, I will try to use your suggestions.
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Topic summary

✨ The discussion revolves around the issue of removing stains and streaks from the display of the ZTE V987 smartphone, caused by isopropyl alcohol (IPA) seeping into the device. Users suggest that replacing the LCD and touch screen is necessary, as the stains are likely on the polarizing foil of the display. Some propose that while cleaning the display layers is possible, it may not yield perfect results. Techniques such as heating the LCD to 65 °C and using extraction gasoline for cleaning are mentioned. Additionally, there are suggestions to replace the polarizing foil or to use parts from a second damaged device. The cost-effectiveness of repairs is also discussed, with users weighing the expense of parts against the value of the phone.
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FAQ

TL;DR: Streaks after IPA indicate polarizer/backlight contamination; the reliable fix is replacement—"heat to 65°C" to remove and refit the backlight. This FAQ helps DIY phone fixers tackle white spots and streaks on ZTE V987‑class LCDs. [Elektroda, rabus40, post #17088154]

Why it matters: It helps you decide between drying, layer cleaning/swaps, or full module replacement so you don’t waste money.

Quick Facts

What causes white spots and streaks after cleaning my ZTE V987 screen with IPA?

IPA reached the display’s polarizing/backlight film. That changes light diffusion and creates white spots and streaks. Cleaning reduces some staining. A perfect result requires replacing the contaminated film or the module. [Elektroda, E8600, post #17086542]

Will the stains fade on their own?

Once trapped liquid settles, it stops evaporating. "So it will not evaporate anymore." A useful tell is stains changing with viewing angle. That points to polarizer contamination, not surface dirt. [Elektroda, E8600, post #17086594]

Can replacing only the glass/digitizer fix this?

No. The damage is beneath the glass. As one reply states: "Only LCD and touch replacement." Replacing glass alone leaves the polarizer unchanged. [Elektroda, gruktel, post #17086527]

Is cleaning between LCD and touch a reliable fix?

Technicians can unstick the screen stack and clean layers. It does not restore perfection. "For it to be perfect, only an exchange comes into play." If you need pristine visuals, plan a replacement. [Elektroda, E8600, post #17086542]

What’s the lowest-cost path if the phone’s value is low?

Touch glass is approx. PLN 30. An LCD plus glass assembly is approx. PLN 150. Compare these figures with your device’s value before deciding. If costs approach value, replacement may not be economical. [Elektroda, 8850, post #17086577]

How can I attempt a no-parts drying method first?

Disassemble the phone and remove the display module. Dry the disassembled display with rice or another desiccant. If that fails, try replacing the polarizing foil. Avoid touching optical surfaces with fingers. [Elektroda, E8600, post #17089135]

How do I replace the backlight/polarizer layers?

Use gentle heat and swap the backlight stack. 1. Remove the LCD module from the phone. 2. Warm it to about 65°C to soften adhesive. 3. Lift the backlight and install a new one, then reassemble. You can search videos for this process. [Elektroda, rabus40, post #17088154]

Can I wash the polarizing foil instead of replacing it?

Yes. Disassemble the LCD layers and wash the polarizer with extraction gasoline. The hardest step is removing the LCD from the frame. Alternatively, transplant layers from a cracked donor LCD. [Elektroda, sagem90, post #17087274]

I have a donor phone with cracked glass. Can I swap layers?

Yes. You can transplant the optical layers from a damaged, cracked LCD to your unit. Ensure donor layers are intact and clean. [Elektroda, sagem90, post #17087274]

What phrase should I search to find tutorials for this repair?

Use the term "backlight repair" when looking for display layer removal and replacement videos. It matches the procedure you need. [Elektroda, zolwik1985, post #17089067]

How can I confirm the polarizer is the issue before opening the phone?

Change your viewing angle and watch the streaks. If they shrink or change, the polarizer or backlight is affected. Surface cleaning will not fix that behavior. [Elektroda, E8600, post #17086594]

Any handling tips when replacing a polarizer?

Avoid greasy fingers on optical films. "When replacing the foil, I advise you to be careful with greasy fingers." Work clean and handle edges only. [Elektroda, E8600, post #17089135]
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