My s9's ambient light sensor,proximity sensor stops working and again works after some time, i just had it repaired at ASC for the same problem but its still happening and i believe it has a software problem
when you visited service center for repair then did they installed your last 2.1 software again?...why saying it's because I am using same device and last time I flashed 2.1 from service center here no problem
no bro.....but in case of 2.1 I don't know because that day only I flashed it directly ....if any big os update or new ui interface comes then this is only proper and recommended method is to flash that firmware by Odin or smart switch or through authorized Samsung service center, otherwise mobile data or wifi produce software holes for that big update if bychance that software not installed fully or correctly it's because Samsung provides non A/B partition type of ota software not like other company ...i am using galaxy device since 2012 i allaways use smart switch to install software and for any big os update odin flash or service center.....no issues present in my device in old devices as well as new🙂 bro once flash it and from next time use smart switch 👍
We request you kindly visit the service center, as your device needs physical inspection. To check for the nearest Samsung service center kindly click on the link: https://www.samsung.com/in/support/service-center/
