[Samsung Galaxy S20 / S20+ / S20 Ultra Guides, News] megaghostgamer:
Since there's a lot of fuss about the stability of the release, I'd like to reiterate that for 1, it is a Pre-Beta and for 2, a lot of issues could be from not factory resetting after updating and I'll get into that more in a second. I've had the update installed since it was posted on this thread HOWEVER, my S20 Ultra is not my daily driver. With that being said, I still use the phone extensively for media consumption and what not.

Installation: Since I have a Verizon model, I had to first update my phone using a different providers update to the BTH4 I believe, so that I can update to the Pre-Beta. After doing so, my phone booted and there was UI crashes like crazy and random reboots etc... I solved this by factory resetting and going from there. Now that I've reset the phone and have had the update for a while now, I'll be sure to share every bug that I personally found on my S20U

Bugs I've personally encountered:

Media Controls staying on lockscreen (The provided screenshot will show how it'll stay on there, yes I know I have youtube open but, even with it closed, the widget itself will stay)

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Media Controls in notification shade being not properly sized (Prominent in Youtube)

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I've had the clock from the lockscreen get stuck behind the music controls that won't go away (lol)

Overall the UI isn't as 'fluid' and I say that very lightly, it's not necessarily laggy but, after using 2.5 you'll notice it more and more with usage

Wifi Stability (This one is weird and may be just mine, it's not consistent), sometimes when I turn my the screen on and go to use something that relies on internet, I'll see it show an exclamation mark indicating no connection and after about 10 seconds it'll connect and work, then of course I'll get 20 notifications at once lmao

Scrolling on Samsung Internet, there will sometimes be a jitter that'll feel laggy

Sometimes on reboot, you'll see a UI crash, it'll only happen once then go away

Netflix is showing up as "This app isn't compatible with your device anymore." from the playstore. (May have to do with certifications, I'm not expert)

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When in one handed mode, shrinking and expanding the mini window with the provided handle can sometimes be glitchy and not work properly

There's no theme's in the Samsung Theme Store (My assumption is, is that the themes have to be specifically developed for ui 3.0 and there are none yet but, Wallpapers, Icons and AOD work)

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Some notifications won't let you swipe them away (May be a Android 11 Feature, not fully sure on why it does that)

Bugs I've seen others encounter:

Bluetooth not working

Random reboots (I personally haven't had a random reboot on mine ever since I cleared data)

For being a pre-beta, it's rather impressive. Granted some of these issues may be a deal breaker to some whereas others not, it's still fairly reliable depending on said usage. If anyone has a particular feature / setting that you want me to test and see, let me know and I'll try to report back. Hope this helps, happy pre-beta :)