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Pixel 4A: Known for failures of its OLED screen manifesting as quickly-spreading purple smears.

• hyperpl 5y ago
  Interesting, I just RMA'd mine because of this and they asked about liquid damage, etc.. I had no idea this was common. It almost looked as though some purple ink got under the screen.
  • AlotOfReading 5y ago
    That's oxidation in the OLED cell. Normally there's supposed to be a hermetic seal around the display to prevent this, but manufacturers have to balance quality and durability against cost and bulk. Samsung just didn't quite hit the mark in that generation.
    • fomine3 5y ago
      Samsung have made AMOLED for smartphones for about 10 years and such issue isn't very common on most phones. I doubt Samsung doesn't failed but phone manufacturer failed.
• chooseaname 5y ago
  Have a 4a. Have never heard of this.