I seriously regret upgrading 3 of our phones from the S10 to the S20! Lots of similar problems to what UserSGy8sW3XMM listed with the random turning off & on, terrible battery, phone getting hot to the touch & touch screen "selectively" responding. Sometimes a call will go to VM before I can answer a call. At those times, no amount of swiping answers. Doesn't only happen on calls. It can happen in virtually any application at any time or it works just fine. I have had Samsung products for years & loved every one of them - until now. This one is AWFUL! I've contacted tech support - no help. I've contacted T-MOBILE - very little help. I had my phone replaced within a couple weeks of getting it, it was so unreliable & the battery was so bad. Thought for sure I just got a defective one, but NO. The replacement & the other 2 we Upgraded are about as bad. So that's 4 of the S20 & ALL of them have been terrible! Been dealing with this garbage for just under a year. Very disappointed! Have a pretty expensive, unreliable hunk of junk.
My favorite phones I ever owned were HTC, but now that Samsung & Apple have monopolized the market, the wide variety once available has dwindled. Remember when you get a free phone when trading in your old one. Now the phones are so inaccessible; cannot get to the batteries anymore, no FM radio feature. When I traveled internationally I'd fully charge my extra battery and when I'd arrive somewhere after a 10 or 12 hour flight, I would see everyone scrambling for away to charge their phone, while I was all set for the next 24 hours.