Hello. I have another problem. After replacing the display, the phone worked for a few minutes, after an hour I woke it up again and I can see beautiful spots like in the photo. Everything under the display was very clean, so I could not destroy it with anything, the more so because after the...

When it comes to these purple spots, unfortunately you will not get rid of it (the only thing left is replacing it with a new display). Did you assume original or cheaper? Have you not pressed the display too much to the frame?

If you do not want to have such problems next time, buy new original displays from reliable sources, you will not have such problems, sometimes it is better to pay more but be sure that everything will work after replacement. In this case, I bet that it is a poor quality display or after regeneration, because if you pressed too hard, it would break and stop displaying. Out of curiosity, how much did you pay for it? best regards

Where did you buy it for PLN 800? Enter the details of the auction or store. The originals are bought in magboss. Here you have the original for PLN 596

Let the seller replace it under the warranty.

Did I press? I don't know, I didn't crush it hard. But if it were that bad, it wouldn't happen during normal use? Yes it was the original. What to avoid before installing the next one.

And sometimes the display was not regenerated? best regards

Today you won't find out from the supplier, so I don't know. I don't think it was, but it's probably not 100%. Because I wonder what was wrong and if I did not destroy something myself and I would like to avoid the next exchange, please give me some suggestions.

You bought ordinary junk after regeneration and hence such flowers You have to pay the original for about PLN 600 and you will be satisfied.

It means that I bought junk for PLN 800, the seller denies the original. How to recognize it?

Well, gentlemen, the case was solved, I wanted to peel it off and I completely blew it away. Thank you all.

as above I fired when he wanted to peel it off and send it back to the seller so it flew into the trash.

Samsung Galaxy S7: Stains on Display After Screen Replacement - Causes & Solutions

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#1 17129170 26 Mar 2018 16:08

zygzag zygzag

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17129170 26 Mar 2018 16:08

Hello. I have another problem. After replacing the display, the phone worked for a few minutes, after an hour I woke it up again and I can see beautiful spots like in the photo. Everything under the display was very clean, so I could not destroy it with anything, the more so because after the exchange at the beginning everything was OK. What could be the cause? Some "weak" display?

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#2 17129894 26 Mar 2018 20:55

KamGr KamGr

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17129894 26 Mar 2018 20:55

When it comes to these purple spots, unfortunately you will not get rid of it (the only thing left is replacing it with a new display). Did you assume original or cheaper? Have you not pressed the display too much to the frame?
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#3 17129984 26 Mar 2018 21:21

zygzag zygzag

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17129984 26 Mar 2018 21:21

Did I press? I don't know, I didn't crush it hard. But if it were that bad, it wouldn't happen during normal use? Yes it was the original. What to avoid before installing the next one.
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#4 17130036 26 Mar 2018 21:43

pacholik pacholik

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17130036 26 Mar 2018 21:43

And sometimes the display was not regenerated?

best regards

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#5 17130076 26 Mar 2018 21:59

zygzag zygzag

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17130076 26 Mar 2018 21:59

Today you won't find out from the supplier, so I don't know. I don't think it was, but it's probably not 100%. Because I wonder what was wrong and if I did not destroy something myself and I would like to avoid the next exchange, please give me some suggestions.
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#6 17130274 26 Mar 2018 23:29

pacholik pacholik

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Post #6
17130274 26 Mar 2018 23:29

If you do not want to have such problems next time, buy new original displays from reliable sources, you will not have such problems, sometimes it is better to pay more but be sure that everything will work after replacement.

In this case, I bet that it is a poor quality display or after regeneration, because if you pressed too hard, it would break and stop displaying.

Out of curiosity, how much did you pay for it?

best regards

Company Account:
ELECTRO-GSM
M.Skłodowskiej-Curie 82, Lubin, 59-300 | Company Website: www.electro-gsm.com
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#7 17130562 27 Mar 2018 08:51

tino2003 tino2003

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17130562 27 Mar 2018 08:51

You bought ordinary junk after regeneration and hence such "flowers"
You have to pay the original for about PLN 600 and you will be satisfied.
#8 17130733 27 Mar 2018 10:37

zygzag zygzag

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17130733 27 Mar 2018 10:37

tino2003 wrote:
You bought ordinary junk after regeneration and hence such "flowers"
You have to pay the original for about PLN 600 and you will be satisfied.

It means that I bought junk for PLN 800, the seller denies the original. How to recognize it?
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#9 17130751 27 Mar 2018 10:43

tino2003 tino2003

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17130751 27 Mar 2018 10:43

Where did you buy it for PLN 800? Enter the details of the auction or store.
The originals are bought in magboss. Here you have the original for PLN 596
https://magboss.pl/gh97-18523a-ekran-dotykowy...f-galaxy-s7-czarny-oryginalny,p,pl,44377.html
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#10 17132118 27 Mar 2018 21:39

KRY5PIN KRY5PIN

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17132118 27 Mar 2018 21:39

Let the seller replace it under the warranty.
#11 17132136 27 Mar 2018 21:45

zygzag zygzag

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Post #11
17132136 27 Mar 2018 21:45

Well, gentlemen, the case was solved, I wanted to peel it off and I completely blew it away. Thank you all.
#12 17411740 29 Aug 2018 15:59

zygzag zygzag

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17411740 29 Aug 2018 15:59

as above I fired when he wanted to peel it off and send it back to the seller so it flew into the trash.
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Topic summary

✨ After replacing the display of a Samsung Galaxy S7, the user noticed purple spots on the screen, which appeared after a short period of normal use. Responses indicated that the issue could stem from a poor-quality or regenerated display, rather than physical damage from installation. Recommendations included purchasing original displays from reliable sources to avoid similar problems in the future. The user confirmed they had purchased a display for PLN 800, which was later identified as non-original. Ultimately, the user resolved the issue by attempting to peel off the display, resulting in further damage.
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FAQ

TL;DR: Purple stains after a Galaxy S7 screen swap usually mean a bad/regenerated OLED; "You have to pay the original for about PLN 600" and replace it. [Elektroda, tino2003, post #17130562]

Why it matters: For DIYers and repair shops, this FAQ shows how to diagnose stains fast, choose genuine parts, and handle warranty returns without destroying the screen.

Quick Facts

Purple spots on an S7 replacement screen = OLED damage; replacement is the only fix. [Elektroda, KamGr, post #17129894]
Typical price for a genuine new S7 display: Approx. PLN 600. [Elektroda, tino2003, post #17130562]
Avoid regenerated panels; buy new originals from reliable sources. [Elektroda, pacholik, post #17130274]
Over-pressing would crack the panel; stains suggest poor-quality/rebuilt screen. [Elektroda, pacholik, post #17130274]
If defects appear, ask the seller for a warranty exchange. [Elektroda, KRY5PIN, post #17132118]

What causes purple spots on a Galaxy S7 after screen replacement?

Those blotches indicate panel damage or a low-grade regenerated OLED assembly. A member called such modules “junk after regeneration” that create these “flowers.” Reinstalling, cleaning, or updating software won’t remove stains. Replace the entire display with a new, original unit. [Elektroda, tino2003, post #17130562]

Can I fix the stains without replacing the display?

No. As one technician wrote, “you will not get rid of it.” The only remedy is installing a new display assembly. Massaging, heating, or recalibrating cannot restore damaged OLED subpixels. Proceed to warranty or replacement instead. [Elektroda, KamGr, post #17129894]

Could pressing the screen too hard cause this?

Unlikely. Excess frame pressure typically cracks the display and it stops showing an image. Stains that appear later point to panel quality rather than pressure. Focus on sourcing a new, original module from a trusted supplier. [Elektroda, pacholik, post #17130274]

The screen looked fine, then stains appeared an hour later — is that normal for bad panels?

Yes. The report here shows the phone worked, slept, then woke with “beautiful spots.” That timing suggests a defective screen, not contamination. Replace the module rather than chasing installation errors. [Elektroda, zygzag, post #17129170]

How do I avoid this on the next replacement?

Buy new original displays from reliable sources, even if they cost more. As advised: “better to pay more” to ensure a working result. Verify supplier reputation and return terms before installing. [Elektroda, pacholik, post #17130274]

What is a fair price benchmark for an original S7 display?

Use about PLN 596 as a benchmark for an original S7 display from a reputable wholesaler like Magboss. If a quote is far above or below this, verify authenticity and warranty before purchase. [Elektroda, tino2003, post #17130751]

What price pitfalls have others encountered?

One buyer reported paying PLN 800 for a display sold as “original” and later doubted its origin. Treat steep pricing and vague claims as red flags. Ask for proof of originality before buying. [Elektroda, zygzag, post #17130733]

How can I tell if a part is truly original, not regenerated?

Rely on verified suppliers and OEM part numbers instead of visual checks. The thread cites Samsung P/N GH97-18523A sold by Magboss as an original module. Cross-check the P/N and the seller’s warranty on originality. [Elektroda, tino2003, post #17130751]

Should I peel off the just-installed screen to send it back?

No. Peeling a bonded AMOLED after installation can destroy it instantly. The poster who tried to remove theirs “fired” it and it went to the trash. Stop and pursue a warranty claim instead. [Elektroda, zygzag, post #17411740]

What’s the right next step when stains appear? (3-step plan)

Stop using the device and photograph the stains in good light.
Contact the seller and request a warranty exchange or refund.
Wait for return instructions; do not lift or peel the display. [Elektroda, KRY5PIN, post #17132118]

Does cleaning under the display or reseating help?

No. The installer reported a very clean build, yet stains appeared later. That outcome indicates a defective panel, not dirt or flex seating. Replace the module rather than reworking the install. [Elektroda, zygzag, post #17129170]

Where should I buy an original S7 display?

Choose known distributors with transparent listings and OEM P/Ns. The forum points to Magboss for original GH97‑18523A displays. Compare their offer with yours and check return conditions. [Elektroda, tino2003, post #17130751]

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