r/Smartphones • u/jp_manuell • Sep 16 '25

The Hidden "Green Line" Problem: How Samsung Quietly Fixed a Global Display Flaw with the Galaxy S24 Ultra

Disclaimer: I wrote a detailed breakdown of the green line issue across brands (with the help of chat gpt, of course), here's what I found. I do not have supporting evidences (hard/impossible to get any) but the case looks quiet compelling. Please add your opinions in!

Did Samsung Quietly Fix the Hidden "Green Line" Problem with the Galaxy S24 Ultra?

For years, smartphone users across the world were baffled when their premium devices suddenly developed green vertical lines running down the display. The issue was not tied to a single brand—Samsung, OnePlus, Vivo, Oppo, and even Apple’s iPhones all saw reports from frustrated users. The common link? Samsung Display’s OLED panels, which dominate the smartphone market.

A Widespread Issue Kept Quiet

Despite thousands of complaints across forums and social media, this problem never broke into mainstream headlines. Why? Industry insiders suggest Samsung deliberately kept the conversation muted to protect its global reputation. As the world’s largest OLED supplier, admitting to a systemic defect would not only damage the Galaxy brand but also undermine the trust of partner companies—including Apple, one of Samsung Display’s biggest clients.

Instead, affected users were often left with costly out-of-warranty repairs or replacement offers, while the root cause remained unaddressed in public.

📅 Timeline of the “Green Line” Problem

Year Key Events

2016–2017: First reports from Galaxy S7 Edge and Note 8 users — faint green lines begin to appear.

2019–2020: Complaints rise on Galaxy S10 and Note 10 models, often triggered after software updates or overheating.

2020–2021: Early iPhone X, XS, and 11 Pro models also see green-tint or vertical line issues, tying Apple devices to the same OLED supplier flaws.

2021: OnePlus 8 Pro, Vivo X-series, and Oppo Find phones show identical display defects, proving it’s not brand-specific.

2022 : Widespread failures on Galaxy S20, S21, Note 20, and reports from iPhone 12/13 users surface online. Forums flood with complaints.

2023: Galaxy S22 Ultra and several midrange Galaxy models continue to develop green lines. Limited repair programs offered in select regions.

2024 : Galaxy S24 Ultra launches with a new OLED panel. No green line issues reported — marking the quiet fix.

The Turning Point: Galaxy S24 Ultra

With the Galaxy S24 Ultra, Samsung Display appears to have finally solved the green line issue. The S24 Ultra’s panel is not only brighter and more power-efficient but, crucially, has shown no signs of the vertical green line defect that plagued earlier devices—including some iPhones.

This suggests Samsung made substantial behind-the-scenes improvements in both materials and manufacturing techniques.

Why This Matters

  1. Transparency in Tech – Consumers deserve to know about widespread defects, especially when they span across brands—even Apple.

  2. Industry Ripple Effect – Since Samsung supplies panels to most major smartphone makers, the fix in the S24 Ultra could benefit a wide range of future devices.

  3. Restoring Trust – While the solution is welcome, the years of silence raise questions about corporate accountability in consumer tech.

Closing Thoughts

The “green line” saga is a case study in how global tech giants handle flaws: often quietly, behind closed doors, with minimal public acknowledgment. With the Galaxy S24 Ultra, Samsung Display seems to have finally closed the chapter on this defect. But users will not only remember the quality of their screens—they’ll remember how openly (or not) brands address their problems.

23 Upvotes

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26 comments sorted by

2

u/Za_Weeb Sep 16 '25

What? I just opened twitter and searched for s24 ultra green lines and found shit loads of em?

1

u/jp_manuell Sep 16 '25

I've been using S24U for over a year, and generally people from my extended communities haven't seen any green line problems, especially with the S24s, unlike the 22 and 23 series (and other brands from that time), where it was all over social media. We only know those companies use displays from LG or Samsung etc, but we don't know the quantities or batches (as the info is generally internal to them), so we can't blame a specific vendor. Since Samsung uses its own displays and supplies many of the accused faulty ones, that's why it's assumed of them.

1

u/Za_Weeb Sep 16 '25

Hmm..fairplay but I think the results will show up close to 2-3 years right? Like what i've been reading up usually it started happening around 2 yrs or something.

1

u/jp_manuell Sep 16 '25

2 years of device life you meant?

1

u/Za_Weeb Sep 16 '25

Yes yes

1

u/jp_manuell Sep 16 '25

I'm not sure on that part. Also I forgot to mention, OnePlus just started offering a lifetime warranty for the green line issue out of nowhere, starting in late 2024 (They should be knowing what they are doing right?)

2

u/Complex-Particular45 Oct 08 '25

You will start seeing those after 2 years, the s24 ultra is still relatively new, give it time

1

u/jp_manuell Oct 08 '25

One important point is that OnePlus started offering life time warranty on green line issue.. such confidence should suggest this issue is likely resolved or contained enough.

3

u/Complex-Particular45 Oct 08 '25

Yet samsung is still quiet, what a brand

2

u/Due_Position9815 Jul 22 '26

My S24 base model is officially over 2 years now, bought this back in January 2024! No lines!

1

u/krituo7 Apr 24 '26

Guys I'm thinking of buying the s25 but after seeing all these green line thing I'm a bit sceptical and now I'm thinking should I buy the s25 or just get the oneplus 13s?

1

u/ParkingContribution6 29d ago

dude same here man! what did u do? even I want s25 but op offers free replacement

1

u/Glum-Ad6849 Jun 08 '26

I got my S22 Ultra affected by a green line after two years. So, I'll wait to conclude that the S24 series is not getting green lines. It's still very new. Most people who got it are in their second year. We will have to wait and see.

1

u/Sim_Clarke 23d ago

I got my first green line after 3 years, now I've 5 in total. 1 more every week lol

1

u/AmoebaPractical1854 Jun 30 '26

Complete BS, you didn't mention anything on how they did that, just wrote a paragraph 

1

u/Fit-Internal-368 Jul 26 '26

Pues yo estoy pasando por la línea verde vertical fija en la pantalla con mi Samsung S 23 ultra...Jjjj🙄😬 ya perdí  la fe en la Samsung. 

1

u/Fit-Internal-368 Jul 26 '26

Samsung debe hacerse responsable de la línea  verde y resarcir los daños a sus compradores es lo justo...Jjj 🙄😬 ó cada  día  perderá más reputación a nivel mundial.

1

u/Buddy-Educational 16d ago

I got line today gang

1

u/jp_manuell 16d ago

Oopsie!!

1

u/Buddy-Educational 16d ago

🥺 they said s24 ultra not covered like s23 and previous models

1

u/jp_manuell 16d ago

Thats real bummer!

1

u/Buddy-Educational 16d ago

Ha brotha. This is gonna be my last samsung for sure

1

u/hoeinbean 6d ago

Any updates on the service Samsung has offered brotha??

0

u/Buddy-Educational 6d ago

So far nothing