ill start this off with a solution, if your galaxy S9 has started to randomly shut off, shut off when you lock the phone, or shuts down when the screen times out and goes dark. you need to turn off your finger print sign in. this should fix the issue. (I did not find this solution, we can all thank Terri!)
how many people experiencing this issue are using T-Mobile? i updated the phone, and after a theme change, i actually enjoyed the oneUI.... but now, my phone shuts off every time it goes dark. so its either leave the screen on and risk burn in or turn my phone on and off every time i want to use it. obviously this is a bug in the update, but why wouldnt it happen right away? why is it only now....a week or so later that this issue is just popping up randomly, half way through my day?
samsung.....we need a patch fast. this is a security issue. and im sure people will have burn in from leaving their phones on, since they understandably cant turn it on and off 20 times a day like ive done. (literally) HELP US OUT HERE!
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@userxddkOMLQAY Have you tried any of the mentioned troubleshooting steps?
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My phone has this finger print issue as well. I see a lot of posts on here but I'm not able to find a patch on here. Please send me a link or something so I can fix my Note 9. I love this phone but need this issue resolved!
My Galaxy S9 started shutting down when using fingerprint reader about 2 weeks ago - 10/3/2020. This started occurring after installing the latest security/software update from T-Mobile. Can't believe Samsung and T-Mobile can't figure out how to fix this glitch! Of course, as a workaround, I've turned the fingerprint reader off. This is not the solution as other have said, it's merely circumventing the issue that has no resolution so far!
I'm having this same issue, if I did the same thing that you said to OZ, Can my phone be considered for repair by samsung or 3rd party. It's a fairly new phone just a month. G S9
The only way I could get rid of the problem is disabling any screen lock or substituting the PIN by the pattern. Samsung, please fix this as high priority. Because phones rebooting every 2 min are useless and phones without proper screen lock are a danger.
My phone just started doing the EXACT same thing this morning. Unfortunately, I didn't find this blog until AFTER I did a hard reset on my phone and lost everything only to see that the problem wasn't fixed. Samsung needs to get it together. These phones are NOT cheap and we expect a better product. Unfortunately my phone is out of warranty because the back is cracked. I don't want to have to pay a $225 deductible to get a replacement phone when this is a obviously an ongoing problem. Can we please have a fix?!?!? I'd like to use my fingerprint scanner again!
Yeah there is definitely some bug associated with the finger print scanner. I had the same problem as above where the phone turned off once it locked (I did not have this problem until just recently). I went through all of the online help (safemode, wiping the cache, etc. and nothing worked). I eventually had to do the factory reset and that fixed everything initially. Once I added back the fingerprint scanner option the problem came back. I guess I will just use the PIN feature until Samsung fixes this bug or they offer a decent trade in for an S10+.
Had the same issue a month ago and (prior to reading this thread) went through all the steps and still no fix. The only way I was able to prevent it was by using that ugly multicolor screensaver. That worked for about a month.
This weekend I needed to use the power saver option to keep my battery life while traveling. When I switched back to optimized, the lock screen reboot/power down came back.
this must have triggered something in the security and battery saving settings. Because turning off the fingerprint scanner definitely worked but I also noticed a lot of my settings for both security and battery did not return after the battery save switch.
definitely frustrating. And nobody wants to go through the trouble of constantly getting new phones. Samsung needs to figure this out fast. This phone wasn't cheap and they had enough time to fix the initial bugs