My finger print reader works flawlessly, even with a tempered glass screen protector on it. I still have my old s10e and hated the finger print reader on it, find the pixel 6 one to work far better.
I do have issues with weak signal but to be honest where i live i have always suffered from a weak signal on various networks. I am hoping that it will improve with whatever update they put out to resolve the issue.
I have had Samsung phones from s2 all the way up to s10e and was never happy with the camera on them, particularly on indoor low light shots.
I absolutely love the camera on the p6. Over the festive period i have taken loads of indoor shots and they are fantastic. Great colour and not one with red eye. I always found the Samsung camera to over process pictures with skin ending up waxy looking and loads with red eye that i had to adjust later using Photoshop as there wasn't even the ability to properly fix red eye in the Samsung software.
I also believed that latterly any new phone from Samsung was merely a small evolution on what went before. They are now so developed there is very little left to improve on, also hated the huge number of new phones that Samsung churn out. Overall i am delighted with my p6 and really glad that i made the move from Samsung and only expect it to get better and better as the software matures.