I have a Samsung Galaxy S8. I have had 2 issues lately without any changes to my phone (other than updates).
1. My 3 way call merge doesn't work. I am on a call I go to add a call enter the number and get the other person. I hit merge and nothing happens. It always says unable to complete merge. This is has started in the last few weeks. I have tried it on multiple numbers and with people of Pixel, Apple and Samsung phones. All fail to merge.
2. I also had a minor issue of my messages app not giving me notifications despite having all notifications turned on. The number with a circle telling me how many new wasn't displaying. It was Messages 10.1.45.20. I had to use a different version on my phone of Messages+ to get it to give me messages (6.9.12)
I'd like both issues fixed but honestly the 3 way calling one I really do need a fix for.
All updated on my software and restarted etc. G950USQS7DTA3 on Jan 27th.