⟐ Commented 十月 02, 2017 at 21:11 GMT-7

⟐ Answered 九月 03, 2026 at 2:45 GMT-7

I have a Samsung Galaxy Note20 Ultra, model SM-N985F (4G / Exynos), purchased in August 2020.

The phone was dropped, and immediately afterward the display started showing severe color distortion and flickering.

However, I am not convinced that the entire display assembly needs to be replaced, because the behavior is intermittent and sometimes the display works perfectly.

Here are the exact symptoms:

• Around 80% of the display normally shows distorted colors/flickering.
• The upper part of the display remains visible, including the time, battery and network indicators.
• The touch screen works normally across the entire screen, including the areas where the image is distorted.
• Sometimes, after pressing the Power button, the entire display suddenly appears perfectly normal.
• On several occasions, the complete display has worked normally for several seconds.
• On one occasion, I was able to see the complete normal display, enter my password, unlock the phone and use it normally.
• After a few seconds, the display started flickering and then returned to the distorted colors.
• On another occasion, the phone had been sitting with the screen off. After a very light press, the complete display appeared normally for about one second, then started showing distorted colors again.
• The phone itself continues to operate normally.
• Touch input continues to work normally everywhere on the screen.

Because of this behavior, I would like to know whether the problem could be related to the display flex cable, display connector, or an intermittent connection, rather than the OLED panel itself.

1. Can a damaged or partially disconnected display flex cable cause these exact symptoms after a drop?
2. Can a damaged display connector on the motherboard cause the display to work perfectly for a few seconds and then suddenly flicker and show distorted colors?
3. Does the fact that the touch works normally across the entire screen provide any useful indication about whether the problem is the display panel or the display connection?
4. Can a damaged AMOLED/OLED panel itself behave intermittently in this way — working perfectly for several seconds and then suddenly producing severe color distortion?
5. What would be the correct diagnostic procedure before replacing the expensive display assembly?
6. If I temporarily connect a known-good SM-N985F display assembly to the phone, would this reliably distinguish between a defective display assembly and a motherboard/connector problem?
7. Is there anything specific I should ask a repair technician to inspect on the display connector or flex cable before agreeing to replace the screen?

I would really appreciate your opinion based specifically on these symptoms.

I can also provide photos and, if useful, a video showing the display working normally and then suddenly flickering and changing to distorted colors.

Thank you.

It says Model Name is SM-N986U1

⟐ Answered 八月 27, 2026 at 4:27 GMT-7

⟐ Commented 八月 20, 2026 at 18:15 GMT-7

⟐ Answered 八月 13, 2026 at 6:43 GMT-7

⟐ Commented 八月 08, 2026 at 9:15 GMT-7

Translation Arabic - English

There's a short circuit in the device. How do I discover that?

There is a short circuit in the device that causes a power draw before operation.

⟐ Commented 八月 02, 2026 at 8:01 GMT-7

⟐ Commented 七月 30, 2026 at 17:24 GMT-7

⟐ Answered 七月 27, 2026 at 1:43 GMT-7

⟐ Answered 七月 21, 2026 at 7:46 GMT-7

⟐ Commented 七月 10, 2026 at 1:04 GMT-7

⟐ Edited 七月 01, 2026 at 9:24 GMT-7

⟐ Edited 六月 22, 2026 at 1:53 GMT-7

Translation Arabic - English

How do I fix the cable box next to the monitor cable?

How do I fix this problem, and how do I install it?

⟐ Commented 六月 17, 2026 at 17:23 GMT-7

⟐ Answer accepted 六月 13, 2026 at 14:27 GMT-7

⟐ Answered 六月 03, 2026 at 4:11 GMT-7

⟐ Commented 五月 31, 2026 at 2:09 GMT-7