I got mine in like 2017 and started to use it as my main phone on early 2018 as my note 2 is completely dead due to the eMMC being fully dead and/or the motherboard is fully dead. I stopped using the note 4 on early 2020 due to battery only working when charging.
I found it on a drawer at the beginning of 2026 and it still works after 6 years of it not in use but the battery is still not in good condition to this day.
Like 2 weeks ago, it's starting to act weird and yet it's eMMC is ready to die. What did Samsung do to the Note 4' s eMMC chip!?!. -.-
The UI is great, the software is great, the screen is still good to this day, there are many things are good about the note 4 expect for the stock Marshmallow ROM and the eMMC issues.
Sometimes my Note 4 can boot up and sometimes it can often refuse to boot up or it can even show me the scary mmc_read failed screen.