What is going on with the S20???

Ugh..sorry for your issues. I know your pain! that's frustrating as it can be it's a simple fix - they have to replace your phone.

It's a Samsung problem. A lot of the s20s and note twenties had motherboard issues. I had all those issues plus more and once they replaced my phone I've had no issues but intermittent T-Mobile service problems. Samsung makes it very difficult though to get a new phone. I took it to an authorized repair facility and he's the one that first diagnosed the motherboard issue and denoted that it needs to be replaced (1500$ note 20 ultra I purchased directly from Samsung with the new watch). They still will not respect them and wanted me to mail in my phone for their technicians to look at it and we all know that just means they do a hard reset and send it back. And hardware issues don't go away until the hardware is fixed or replaced..other users with the same problem mentioned they had to send their devices to Samsung three different times for them to finally agree to replace a phone like it's their new protocol. This never used to be the situation with Samsung. They have always been so accommodating until recently. Being without a phone for over a month for me is unacceptable as well as many people since we use them for work and Samsung does not give loaner phones unless you have their insurance. I got lucky and the last day I could sign up for Samsung care plus, I canceled the insurance through T-Mobile (which is more expensive but has more coverage) and got Samsung care plus. However another rep did not agree with the first rep and told me that loaner phones are not issued understand Care Plus and of course I haven't had time to read the fine print. However, they did agree to send me a new phone after all. But it took much time and patience.

I wish you good luck on your journey!

you know I spent all this money and switched over from Verizon because T-Mobile has the only 5G Network in sacramento. But honestly it's too unstable and inconsistent. My Verizon 4G was just as fast if you take the averages of both. I do get intermittent text messages issues even with my replacement phone. And reboot and 10 minutes later the messages begin sending again but I never had these issues with Verizon so I may be going back myself. I also noticed that the actual call quality itself is not as good. Not saying it's bad I'm just saying that I never had one issue before

There is a problem with the S20 / 5G , have some dropped calls and txt, not many but enough to be a problem , following up and see what exactly the problem is, think it could be an isolated problem with some phones sent out 

m talking about the regular S20 not the SE

Thanks for the links , yup looks like it could be a Samsung issue, very disturbing that the company never even sent a response or solution to this problem, when asking Tmo if they had any issues with the galaxy S20 I always was answered that they had no issues so far.

It seems weird to me but it looks like there is a heavy bug in the S20 , and Samsung knows about it, the software updates until now didn’t fix it. So this should be monitored closely and more people should push about this. It’s not acceptable to have an expensive phone that keeps dropping calls !! 

Something is wrong for sure 

All Samsung devices over the COVID-19 era have taken a massive hit in software/firmware reliability and quality control.  Sadly, Samsung could care less since they still sell.  This affects every variant for North America on pretty much every model named and more.  It isn’t exclusively a Samsung issue though, as testing and quality control has dropped on pretty much all manufacturers across the board and the frequency of updates for all devices has significantly slowed as well.  I would say the only exception seems to be Google, but the Pixels aren’t perfect either.  

That definitely isn’t any excuse but make sure you complain to these companies when they polish a turd and push it out.  This is one of those times where I can appreciate the OnePlus FUT program for testing alpha and beta builds.  I think more of the bigger companies need to open up beta and alpha testing programs for people who want to volunteer to test early builds and report the bugs and issues back to these companies.  

Thanks Gadgetguru, 

I have posted on other platforms as well  (reddit etc), the more the better so it will get more attention 

Did anyone find a fix?  My s20 does not work on the tmo network.  constantly having to reset with airplane mode to get my texts and make phone calls.  horrible.  i miss sprint.

Having same issue that started a few months ago….however, the issue I have is a bit different. The only place I have major issues is in my house. Doesn’t matter if I’m using WiFi calling, 5G, 4G, 3G….Either I only hear every 3 or so word or the receiving end only hears every 3rd or so word. Sometimes texts don’t go through but eventually they do.  HOwever, when I use WhatsApp or FB there are no issues with the call..only on the cell side. Others on T-Mobile do not have the same issue in my house.

I don’t recall if my update was a security patch or OS update.  There have been a few other updates since and none of it helped. I have a the S20 Ultra. It works great everywhere else and the camera is awesome.

I have 2 S20 devices (1 S20 and 1 Ultra). Both started experiencing these symptoms about 1-2 months ago at nearly the same time. T-mobile did the basic troubleshooting steps with me (reboot, reset network settings, new sim). None of which seems to have worked. I was then referred to Samsung support who suggested a hard reset and factory data reset. When neither worked, they suggested a service center or buying a new phone and watch. Neither party acknowledges any software issue.