I updated my zte grand pro last night. Even though the update hasn’t impacted this web sight, it impact another forum that I visit. I use Opera mobile on this phablet, and I didn’t update it. I did however install a new micro SD card and didn’t copy over the stuff contained on the old card, although I do have it backed up on the laptop.
I don’t know how to advise you except to suggest you create backups before updates, or backup what you have now and see if updating your downloaded apps helps correct issues. Sometimes apps freak out when the main operating system is updated.
Regardless, backup your stuff before you attempt to change anything. You might try a Samsung forum and see if others are having similar issues with this new update. Or try a forum dedicated to Android phones with a focus on Samsung note 4.
I will say that my daughter had that phone, and she began to have some goodies issues with it. Like other notes, her battery was about to explode so her phone company replaced the phone with something else. So, another option is to visit your supplier and see if they can help you in some way.
Sorry I can’t do better than that. Hope you get things straitened out.
Thanks. I do need to back up the phone. Good reminder.