Lots of issues, not sure which side it is on. Got the S20 in March, my existing G5 transmitter worked fine. I use the X Drip+ app rather than the Dexcom app. But just got a new transmitter, and while the bluetooth on the phone can find it, the xDrip app is having a hard time getting data from it. Can't even download the G5 app as it says it is incompatible with the S20.
Most frustrating thing is, I was using my old transmitter and it worked just fine on the S20. Now, nothing works....
So I just got the note 20 ultra and had the same reaction and here's what I did. I did the smart switch to set up my new phone with all the stuff from my old phone. Super easy. Then realized everything you all were saying so I googled and stumbled upon a reddit thread about build your own dexcom app. There were several variations based on model and US vs UK I believe. There is also an older version that you can use. Next erase all your cgm stuff on your new phone before continuing (dexcom, xdrip or nighthawk, clarity). So next I tried the newer doc and it would never find the transmitter. So I used the older version which works amazingly. You simply download this
Follow the prompts and it will download a working dexcom app. After your dexcom app is actually working, do the smart switch thing again and unselected everything except your nighthawk/xdrip and clarity. Your cgm world will be just like it used to
FYI ... Dexcom G6 app does not work on the Galaxy Note20 Ultra 5G, which I got today.
Dexcom app says "Incompatible smart device" when you open it.
I hope Samsung / Dexcom get this fixed ASAP !!!
There is a workaround for this. I used it on my Note 20 5G.
First deleate all your dexcom apps like Clarity. If you have sugarmate or nightwatch delete them as well.
Then follow this link to build your own Dexcom App. I did this and it worked for me. There is one option to shorten time for warmup to 10 minutes. Id stay away from that as I have read it creates problems with the newer version of the transmitters. Once you have built the app and installed it, you can log in to your dexcom account, install Clarity and it will work flawlessly.
It is running on my S20+. In fact, just today I installed a new G6 transmitter - what I've been waiting for to actually run everything Dexcom on the S20+. I set up the new transmitter and started it from the S20+ and I'm now getting my readings there.
I also moved my WearOS watch to this phone today so that I could continue to get my Dexcom readings on the watch. Everything is working.