that's really weird mine has been fine it's now on one ui 3.1 androids do have a worse standby time, I only find my Google play services uses alot of battery when I'm on the move and I think that's because my Google maps shares location with family, I have always found samsung battery life bad tho, I had an iPhone 11 Pro which would last me 7 hours screen time would go to bed with maybe 25% wake up to 20% with my s20 its completely dead by 8pm and if you leave it over night is will lose about 18% but to be fair I do use the AOD, I wouldn't go back to apple tho as they have too many bugs, I like samsung but they need to get to grips with battery life, it uses more battery than my bloody tesla!
