So, my Note 4 has been having various issues up to a point where it is almost unusable. So, a week or two ago I pull my phone out of my pocket and notice it was at a "BIOS" screen and it immediately flashed to resetting itself. The phone turns on and it has reset to factory conditions. My phone starting redownloading all my apps which took hours to get roughly half of my apps back. Since then I started getting lag on my device. It will be minimal typing delay, unlocking, etc. Now it is something I have to struggle with. It starts with unlocking the phone. I will hit a physical button to wake up the screen and it will not respond right away or it will go transparent black with the lock screen behind it. The screen is unresponsive at that point. After waiting and trying to unlock it again it will then unlock. When you have to use the notification bar or apps sometimes they will barely open, sometimes it will take multiple tries. What happens fairly often is the phone stops responding and then goes right to the lock screen without the screen ever turning off. When inside apps the controls are heavily laggy. Typing is atrocious, you can type sentences and then they will populate 10 seconds after you have typed them, often duplicating phrases in the sentence. In different games, you will have to do an action three times and wait for it to finally happen; e.g., swiping in "Candy Crush" type games and dragging the shot line in Bubblewitch Saga. I frequently use Spotify and Slacker. They will play "fine" in the background but opening the app and navigating the apps are next to impossible. I also frequently get the "App X: Not Responding" with wait, report, close despite not using the app or when I am using the app it is working fine. I hit wait and continue using the app as normal. Notifications are also hit and miss now. Specifically Snapchat, despite verifying the settings, is sometimes showing in the bar. I have tried restarting multiple times, removing the battery pack, clearing the phones cache through the "BIOS", clearing app caches, deleting apps I have downloaded since the issues began arising, entered developer mode and changed animation scale, turned down background apps. None of these have given any difference other than my phone is getting worse. I don't know if I should do another factory reset or if this is a hardware failing issue and I should just use my insurance to replace my phone.