For a Note20 or Note20 Ultra whose touch screen is unresponsive or misfiring, Samsung's checks are: remove uncertified cases and protectors and dry the glass, restart with Side plus Volume down held over 7 seconds, try another undamaged charger, review accessibility settings and turn off full-screen gestures. Safe mode and the Samsung Members touch test separate an app problem from hardware. The two models differ: the Note20 has a flat 6.7-inch 1080p panel at 60 Hz under Gorilla Glass 5, while the Note20 Ultra has a curved 6.9-inch 1440p panel at up to 120 Hz under Gorilla Glass Victus, and both have the S Pen.
Differential
Likely causes of “Samsung Galaxy Note20 family screen or touch input is not working correctly”, and how to tell them apart
- 1
A bad charger or touching while charging
What separates it Touch misbehaves only when the phone is plugged in and works normally on battery
How to confirm Use another undamaged charger and leave the screen alone while it charges
- 2
An accessibility option
What separates it Two-finger taps needed, drags fail or quick taps are missed
How to confirm Turn off TalkBack, reset touch delays and disable Magnification
- 3
Gestures reading edge taps
What separates it The edges do nothing, mainly on the curved Ultra
How to confirm Switch to the Buttons navigation bar and check whether the missed edge swipes now work
- 4
Moisture or a protector
What separates it There is patchy touch, especially near the edges, because of moisture or a protector
How to confirm Dry the glass and remove any uncertified charger or accessory, then test touch again
- 5
Display damage
What separates it Lines, dead zones or phantom touches after a drop
How to confirm Book a repair if Safe mode and the Members test both fail
Before you touch a setting
Record this first — changing settings destroys the evidence
- Where on the glass touch fails: everywhere or one edge
- Whether it fails only when charging, wet, with a case on, or with the S Pen
- The Safe mode and Samsung Members touch test results
Try in this order
0 of 7 completedStrip accessories and dry the glass
ReversibleRemove any uncertified case or protector and wipe the screen with a soft dry cloth, then test touch again.
Restart
ReversibleHold the Side key and Volume down for more than seven seconds until the phone restarts, then release and wait for the logo to appear.
Swap the charger
ReversibleUse another undamaged charger and cable, and keep your hands off the glass while it charges, to see whether the touch fault disappears.
Audit accessibility
ReversibleTurn off TalkBack, reset the touch and hold delay and tap duration, and disable Magnification, because these accessibility options change how touch behaves.
Change navigation
ReversibleOpen Settings, Display, Navigation bar, choose Buttons and retest the screen edges to see whether gesture swipes were the problem.
Try Safe mode
ReversibleTry Safe mode, by booting Safe mode, and if touch works there, removing recent apps one at a time.
Run the touch test
ReversibleOpen Samsung Members, Support and run the Touch screen test, which shows where the panel fails to register and gives you a result to quote.
Model-specific
What is true of this model and not of its siblings
- Displays
- 6.7 inches at 60 Hz (Note20) and 6.9 inches at up to 120 Hz (Ultra), with an ultrasonic under-display fingerprint sensor, per Wikipedia.
- Build
- IP68 to 1.5 m for 30 minutes; aluminum frame (Note20) and stainless steel frame (Ultra).
- Part numbers
- Samsung orders a screen by SM- model number; an owner cannot order a display by part number.
- Tools and supplies
- A dry cloth, a second charger and a flashlight. Do not open the phone.
- Repair cost
- Module repair with battery is $219 (Note20) and $269 (Note20 Ultra) as suggested US prices that vary by store.
- Other models this page answers
- These steps also fit the Galaxy Note20.
Stop boundary
When this stops being a self-service repair
- !If Safe mode and the Members test both fail, visit a Samsung center
- !If the glass is cracked or lines appear, book a repair; the US module price is $219 or $269
- !If it is frozen after 7 seconds of Side plus Volume down, contact Samsung
Evidence ledger
Sources behind this answer
Charger, accessibility, gestures, moisture, Safe mode and diagnostics.
Note20 and Note20 Ultra battery, charging, chip by region, storage and microSD, Wi-Fi, display, glass, frame and end of software support.
Samsung's suggested US screen module prices by model.
Exact questions
Common questions
How do I restart a frozen Note20?+
Hold the Side and Volume down keys together for over 7 seconds.
What displays do they have?+
Wikipedia lists a 6.7-inch Super AMOLED Plus 1080p at 60 Hz for the Note20, and a 6.9-inch Dynamic AMOLED 2X 1440p at up to 120 Hz for the Ultra.
Can settings break touch?+
Yes: TalkBack, touch delays, tap duration and the magnification shortcut all change response.
Is the S Pen part of the touch fault?+
It uses the same screen. If touch fails with a finger but works with the pen, or the reverse, note it for the service center; Wikipedia lists pen latency of 26 ms on the Note20 and 9 ms on the Ultra.
Why is touch slow rather than dead?+
A heavy background app, low memory, a thick protector or a warm phone can all slow response. Restart, close apps, remove the protector and check for a fault before booking; if it stays slow in Safe mode, run the Samsung Members test.
Why do taps land in the wrong place?+
A cracked or delaminated display, a poorly fitted protector or moisture can offset touches. Dry the screen, remove the protector and see whether the fault sits in one zone; if it stays there in Safe mode, the display needs service.
Could a case cause ghost touches?+
A case that presses on the curved edges of the Ultra can trigger touches. Remove it for a day; if the problem vanishes, the case is the cause.
What should I take to a service center?+
The phone, its SM- model number, a note of when the fault began and what you tried, including Safe mode and the Members touch result. Clear evidence shortens the visit and helps them quote the right repair.
Does moisture damage show up as touch faults?+
It can. Water on the glass or inside the phone makes touches unreliable, and the liquid indicator in the SIM tray turns pink or red after exposure. Dry the phone, do not charge it wet and have it inspected if the indicator has changed.
Is a screen replacement the only fix?+
Not when the cause is settings or accessories, which Samsung's steps cover first. If touch fails in Safe mode and the test shows a fault, the display module is the likely repair.