Moving from a Note 8 I didn't really expect to see a lot of difference in actual operation but have been pleasantly surprised at how much smoother standard operations seem to be. Not very impressed with the photo security systeme mostly doesn't seem to work, but finger print recongniton is good with the supplied (TPU) screen protector. I use OS maps a lot and appreciate the faster scrolling than Note 8.
Battery life is about a full day with a lot of use, eg map tracking and newspaper reading; down to 20% by day's end which is OK.
Not sure I could justify a full price Note 20 4G but at the price I paid , I'd rather have the Note 20 than my Note 8 with a new battery which it needs after 3.5 years hard use.