Green Line on Samsung Phones: Why It Happens and How to Deal With It

Persistent Green Line Issue in Samsung Phones: Causes, Impact, and the Only Solution

Despite advances in AMOLED technology, Samsung devices continue to face a nagging screen flaw — the green line issue. Here’s everything users need to know.

What is the green line issue?

The green line issue refers to one or more vertical (or sometimes horizontal) lines that appear on a phone’s display, disrupting the visual experience.

• These lines can be green, pink, or white, often appearing without warning.
• The issue has primarily affected users in India, but global reports exist, especially on platforms like Samsung Community forums, Reddit, and X (formerly Twitter).
• It impacts both flagship and mid-range Galaxy smartphones, particularly those using AMOLED screens.

Why does it appear?

While Samsung hasn’t offered a clear explanation, the problem appears to stem from a mix of hardware weaknesses and software conflicts. Here are the likely causes:

• Display degradation: Over time, aging AMOLED panels may lose pixel integrity, causing persistent lines.
• Software updates: Users have reported the issue appearing after One UI updates, notably One UI 7, suggesting potential software-hardware incompatibility.
• Heat stress: Intensive usage—gaming, charging, or video recording—can cause excessive heat, potentially damaging screen components if the thermal system fails.
• Physical impact: Drops, pressure, or prolonged sunlight exposure can contribute to or trigger the issue, especially on older or already fragile panels.

Samsung phones affected

The issue isn’t limited to a specific model—it spans across many flagship, foldable, and mid-range Galaxy phones equipped with AMOLED displays.

Devices widely affected include:

• Galaxy Note 20 Series
• Galaxy S20 / S21 / S22 / S23 / S24 Series
• Galaxy Z Fold / Z Flip Series
• Galaxy A and M Series

Although a few users have reported the issue on the Galaxy S25 series, the number is currently negligible.

Samsung’s response and replacement program

Samsung has acknowledged the issue and rolled out a free one-time screen replacement in India. However, there are conditions:

• Devices must pass physical inspection at authorized service centers.
• The program excludes newer models like the S23, S24, and S25 series.
• It is currently extended until September 2025 (India-specific).

Note: There’s no confirmation of a global version of this replacement program.

Is there a permanent solution?

Unfortunately, this issue cannot be fixed through OTA updates, software patches, or user-level tweaks.

• The only reliable fix is a screen replacement.
• In some rare cases, the green line disappears temporarily, but that’s the exception, not the rule.

Is this exclusive to Samsung?

No. The green line issue affects other AMOLED-based smartphones from brands like OnePlus, Xiaomi, and Vivo. However, Samsung users report it more frequently, likely due to wider adoption and higher market share.

Preventive tips for users

While you may not fully prevent the issue, the following steps could reduce the risk:

• Avoid using your phone while charging, especially for extended periods.
• Keep the device cool—don’t game or record videos for long in hot environments.
• Avoid direct sunlight exposure for prolonged periods.
• Use scheduled updates overnight to minimize temperature spikes.
• If you notice any unusual screen heat or flickering, visit a service center promptly.

Final thoughts

The green line issue remains an unresolved pain point for Samsung users in 2025. Though not widespread, it is common enough to warrant concern.

Samsung should consider forming a dedicated task force to investigate the recurring problem, improve panel durability, and ensure long-term software compatibility. Ignoring the issue risks damaging brand trust, especially among loyal Galaxy users who expect durability and reliability from premium smartphones.