well.. that's kinda true.. battery performance wise..
Right now I rooted with using servicely already got around 5 hours SOT already impressive
This Note 4 is officially the longest duration phone I keep for use, since 4-5 years back.. Although I started using Note 4 since around Nov last year, but I change to another set (gold color) since around Jan-feb. So this unit i'm using is around 5-6 months only.
This phone is very smooth when it was fresh from box.. But now, I'm starting to hate it bit by bit.. It starts to lag, stutter, crashes sometime, experienced once or twice completely freeze that I have to remove battery to restart within this month.. And etc.. I never use any phone long enough to experience such things. Before this when I saw people complaint Android always hang even the flagship device, I tend to disagree.. But now, I have to agree.. My Note 4 is stock, never root or flash rom..
My wife started using iPhone 6 since Christmas, yesterday I borrow her iPhone and play2 with it, it is butter smooth, and it still feels like a premium device, while my Note 4 already feel like old.. Although that might partly driven by the "desires over what is not belong to you" but the facts keep it right, ios is a much more stable software and Android is still lag far behind..
Only the s-pen tied me to this Note 4 for now, else sure I'll ditch it for something else, the new giant phones for sure, the P8 Max and such.. Let's see if Surface Pro 3 with the pen can replace this, then maybe bye to this phone.
Is time to root your phone buddy ...