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Space & Astronomy

Galaxy Watch 4 Display Issue Spreads to Smartwatches

WireByte Staff · July 6, 2026

A Reddit user reported a vertical white line on their Galaxy Watch 4 after a software update, echoing a known display issue in smartphones. The Galaxy Watch 4, released in 2021, is now past its warranty period, leaving expensive screen replacements as the only fix. The issue may be linked to thermal and electrical stress on aging AMOLED panels.

Key points

  • A Reddit user reported a vertical white line on their Galaxy Watch 4 after a recent software update.
  • The issue may be linked to thermal and electrical stress on aging AMOLED panels, similar to smartphones.
  • The Galaxy Watch 4 is no longer under warranty, making expensive screen replacements the only definitive fix.
  • The smartwatch has previously suffered from hardware failures, including the 'Red Screen of Death'.

The latest development in the Galaxy Watch 4's display issue has left users concerned. A Reddit user reported a vertical white line on their device after a software update, sparking fears that the issue may be more widespread than initially thought. The Galaxy Watch 4, released in 2021, is now past its warranty period, leaving expensive screen replacements as the only fix.

The exact cause of the issue is still unclear, but analysts suggest that it may be linked to thermal and electrical stress on aging AMOLED panels. This is similar to the known display issue in smartphones, which has plagued Samsung devices in the past. The Galaxy Watch 4 has previously suffered from hardware failures, including the infamous 'Red Screen of Death', which has left some users questioning the longevity of the device.

As the issue continues to spread, users are left with few options. With the Galaxy Watch 4 no longer under warranty, expensive screen replacements are the only definitive fix. This has led some to consider upgrading to a brand-new device, rather than trying to repair their existing one. The situation highlights the importance of investing in devices with durable and long-lasting components.

Sources

WireByte Staff — Editorial Team

The WireByte editorial team synthesises technology news from multiple primary sources, verifies the facts, and links every source. Articles are produced with AI assistance and reviewed under our editorial policy.