content: You can download a custom ROM, I had one for a couple years on an old phone and it worked very well. Its a great way to speed up your old phone and get a couple more years out of it.  The Samsung software alone is enough to slow down an older phone. I don't expect to pull an old pc out of the closet and smoothly run newer programs. That being said Samsung hardware is pretty good. I am still on a note 4 without a custom rom and it is not at all slow. The battery is much worse but I will probably still use it until the next note that has support for Tmobile's new band.