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LG K4 - Quick Glass Replacement: Is it Fully Integrated with LCD?

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  • #1 16854762
    toon
    Level 28  
    Posts: 1558
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    Hello
    Is the glass in LG K4 fully integrated with lcd?
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    #2 16854778
    sagem90
    Level 17  
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    No, you have a separate one.
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  • #3 16857164
    toon
    Level 28  
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    And what about the case in K4 Dual 2017?
  • #4 16860650
    rakoslaw123
    Level 11  
    Posts: 78
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    Fast assembly requires specialized equipment:
    separator (for dismantling the old, compact glass),
    laminator (for proper gluing of a new glass with UV glue),
    clave's car (eliminates air bubbles under the new glass)
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  • #5 16863037
    toon
    Level 28  
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    I am talking about the factory fast assembly method.It is like in the usual K4, this is also the case in k4 dual 2017.
  • #6 16863725
    KRY5PIN
    Level 37  
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    Fast for you is a digitizer ?? Do you just ask about the top layer, i.e. you have a crack but the touch works fully ??
  • #7 16864966
    toon
    Level 28  
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    As in the subject, fast is fast.
  • #8 16865991
    KRY5PIN
    Level 37  
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    Approx. In LG K4 and K4 dual the same.
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  • #9 20163130
    Theofilos
    Level 14  
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    Hello,
    is there such a quick replacement instruction on the Internet somewhere?

    Is this "laminator" a special device, or can the pasting be done just as well at home?
    Can other thin plastic glue be used instead of UV glue?
    Can the "auto clave" be bought in some small packages?
    I don't need large amounts for one smartphone.
  • #10 20163227
    blahfff
    Level 41  
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    Theofilos wrote:
    Is this "laminator" a special device, or can the pasting be done just as well at home?


    A special device.

    Theofilos wrote:
    Can other thin plastic glue be used instead of UV glue?


    This is an LCD screen, so using any liquid glue will end up flooding the backlight. For this type of screen, and currently screen regeneration in general, OCA adhesive in patches is used.

    Theofilos wrote:
    Can the "auto clave" be bought in some small packages?


    It's a device, not any liquid or anything else you had in mind ;-)
  • #11 20165665
    tino2003
    Admin of GSM Group  
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    At home, you can only replace the whole, complete LCD with a touch.
  • #12 20165779
    bogdan2491
    Level 22  
    Posts: 483
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    Which laminator for UV glue? What are you writing about? Laminator is needed for OCA glue patches, UV nail lamp is enough for UV glue and stain tolerance on LCD backlight :)
    This phone has a combined glass with a display, so without the above-mentioned equipment and experience, there is no chance to do it correctly. Even experienced service technicians who have all of these and years of experience are not 100% effective, in one in 10 out of 50, 100 or 1000 there will always be something wrong.
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Topic summary

✨ The LG K4 features a separate glass and LCD assembly, meaning the glass is not fully integrated with the LCD. For the K4 Dual 2017, the assembly process is similar. Quick glass replacement requires specialized equipment, including a separator for dismantling the old glass, a laminator for applying new glass with UV glue, and an autoclave to eliminate air bubbles. Home repairs are limited to replacing the entire LCD with touch, as using liquid glue risks damaging the backlight. Proper tools and experience are essential for effective repairs, as even professionals may encounter issues during the process.
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FAQ

TL;DR: LG K4/K4 Dual 2017 screens are bonded; even pros report ~1‑in‑10 failures; "there is no chance to do it correctly" without proper gear. [Elektroda, bogdan2491, post #20165779]

Why it matters: This FAQ helps DIYers and repair shops decide whether to replace only glass or the full display, what tools are required, and how to avoid flooding the backlight.

Quick Facts

Is the LG K4 glass integrated with the LCD, or separate?

Treat the LG K4/K4 Dual 2017 as a bonded glass+LCD module. Technicians describe it as combined, so plan replacements accordingly. [Elektroda, bogdan2491, post #20165779]

Is the LG K4 Dual 2017 built the same way as the regular K4?

Yes. Forum technicians confirm the K4 and K4 Dual 2017 use the same fast-assembly construction. Procedures and risks are the same. [Elektroda, KRY5PIN, post #16865991]

Can I replace just the cracked glass at home?

Do not attempt glass-only at home. Replace the complete pre-assembled LCD+touch module for a reliable result. [Elektroda, tino2003, post #20165665]

What tools do professionals use for glass-only refurbishment?

Pros use a heated separator to lift glass, a laminator to bond new glass with OCA, and an autoclave to remove bubbles. [Elektroda, rakoslaw123, post #16860650]

Do I need a laminator, and what adhesive should I use?

Yes. A laminator is a special device for bonding with OCA sheets. Avoid liquid UV glue on LCDs to protect the backlight. [Elektroda, blahfff, post #20163227]

Will UV glue and a nail lamp work for this LCD?

No. Liquid UV glue can seep into the backlight and cause stains; use OCA sheets with proper lamination instead. [Elektroda, blahfff, post #20163227]

What does the autoclave do in screen refurbishment?

After lamination, the autoclave removes trapped air to prevent bubbles under the new glass and improve optical clarity. [Elektroda, rakoslaw123, post #16860650]

What are realistic success rates and risks?

Even experienced shops are not 100% successful; expect about 1 failure in 10 attempts. Quote: "there is no chance to do it correctly" without gear. [Elektroda, bogdan2491, post #20165779]

In this thread, does “fast” mean the touch digitizer layer?

Yes. A participant clarified “fast” as the top touch layer, asking if touch still works despite a crack. [Elektroda, KRY5PIN, post #16863725]

Is there a quick glass-only replacement guide online for the K4?

Follow full-module swap guides instead. The forum consensus for home repair is complete LCD+touch replacement. [Elektroda, tino2003, post #20165665]

How do I safely replace the K4 display at home?

  1. Buy a pre-assembled LCD+touch for your exact K4 variant.
  2. Power off, disconnect battery, transfer small parts, and install the module.
  3. Reconnect, test touch and display before sealing the frame. [Elektroda, tino2003, post #20165665]

Can other thin plastic glues substitute for OCA?

No. For LCD stacks, use OCA sheets. Other liquid glues risk backlight flooding and uneven optical results. [Elektroda, blahfff, post #20163227]

Is the K4 glass truly separate from the LCD on some units?

One early reply claimed separation, but later posts treat the assembly as combined for service. Plan for bonded repair steps. [Elektroda, bogdan2491, post #20165779]

What’s the expert take on DIY glass-only for K4?

“There is no chance to do it correctly” without proper equipment and experience; buy the full assembly instead. [Elektroda, bogdan2491, post #20165779]
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