Question

[Jonathan2]

my S9 plus touch screen sometimes doesn't work. why? any advice?

[أبولانا]

Update your phone or reset the factory

[Jonathan2]

done, but same issue

[أبولانا]

hlooo

[أبولانا]

Samsung confirmed it is looking into the issue, Engadget reports. The company released the following statement:
"At Samsung, customer satisfaction is core to our business and we aim to deliver the best possible experience. We are looking into a limited number of reports of Galaxy S9/S9+ touchscreen responsiveness issues. We are working with affected customers and investigating.
We encourage any customer with questions to contact us directly at 1-800-Samsung."
Workaround:

Since this seems to be a hardware issue, your best bet is to speak to whomever you bought the device from and get it fixed or replaced under your warranty. If you received your device from Samsung, it asked affected users to contact them directly at 1-800-Samsung.

[أبولانا]

https://www.digitaltrends.com/mobile/common-samsung-galaxy-s9-and-s9-plus-problems/

[أبولانا]

try below given last method
⤵️⤵️⤵️
Step 1: Turn off your Samsung galaxy S9 & S9 plus
Step 2: Press and hold the Volume up, Bixby key and Power button at same time
When Samsung logo appears on screen, release power key in your device. After few seconds, android system recovery display on your galaxy S9 & S9 plus.
Step 3: Press volume down button until factory reset/wipe data view, after that press power button to select it
Step 4: Press volume down button until Yesselect then press power button to start wipe cache or clear cache process on galaxy S9 & S9 plus
Step 5: Press volume down button up to reboot system now and press power button to restart your galaxy S9 & S9 plus
And that’s it. I hope one of these above given methods fix touch screen not working galaxy S9 and galaxy S9 plus problem. If you have any other handy tricks to fix S9 touch screen issue, tell us in below comment section