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Fix a flickering screen
Separate a software flicker from a failing display cable before you pay for a screen.
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Typical signs: Screen flashes, Flicker at low brightness, Lines after a drop.
Step 1 of 4
You will need: Another app for comparison, Safe mode on Android.
See if it follows the brightness
Flicker only at the lowest brightness is often PWM dimming, which is how many OLED panels dim. Raise brightness slightly or turn on an anti-flicker / extra-dim setting if the phone has one. That is not a broken panel.