Galaxy Watch 4 Shows White Display Line After 2026 Update on 2021 AMOLED Hardware
Updated
Updated · Android Authority · Jul 6
Galaxy Watch 4 Shows White Display Line After 2026 Update on 2021 AMOLED Hardware
3 articles · Updated · Android Authority · Jul 6
Summary
A Galaxy Watch 4 owner reported a vertical white line appearing after a recent software update, extending a display-failure pattern long seen on AMOLED smartphones to Samsung’s aging smartwatch.
The report appears isolated rather than evidence of a broad defect, but the failure matches known AMOLED weaknesses tied to prolonged thermal and electrical stress in older panels.
Samsung’s 2021 watch is now largely out of warranty, leaving screen replacement as the only clear fix if parts are available—and making an upgrade the more practical option.
The new complaint adds to earlier Galaxy Watch 4 hardware troubles, including multiple reports of the device’s so-called Red Screen of Death.