I have recently purchased S20+ and after a week I am facing an issue when I unlock the phone. After the screen is turned on the screen freezes for some secs and then it works normally. I have tried resetting the phone and also removed the cache. I tried starting the phone in safe mode and the problem is still there.
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Same issue here... in 2021.
Running the phone pretty much stock, and never running more than 2 to 3 apps at a time.
I go to unlock the phone, and my lock screen pulls up, but I'm unable to swipe to unlock. Screen just stalls. Then blurs out. If I press the side lock button the phone goes black and stays black for a prolonged period. Usually the only way it resolves is if I: 1. wait 15 - 20 seconds, after which time the lock screen sometimes reappears (and stops freezing), or 2. restart the phone (lock and volume down). It's been happening 5 or more times per day for the past few days.
Pretty ridiculous for a phone I bought just a couple months ago... And yes, I've run all system updates. Still no luck.