That's why I said the optimum battery is between 50-100% and it's healthy to keep in this range?

I had a smiliar issue with my iPhone last year and gave up so I switched to a Galaxy S8. I've had friends experience this too, but I don't think some people realise they need to look after the battery, and do things like let it completely drain (avoid putting it on charge at 2%) and take it off...

I weekend well