My S6 Edge+ just did the same thing. Brand new phone, no way in hell I would risk throwing away my warranty. I restarted it and it went away! The big lock symbol and the unlocked text are both gone!
Thank you for your reply!!
I checked the rom against the download on sammobile, that checks out. I dont have an SD card in the phone because I dont want my data on it getting damaged. I power shocked the phone twice but it still gets stuck on the first loading screen.
I bought a Note II from someone (AT&T SGH-I317) that was apparently stuck in boot loop. I turned the phone on and besides the start up being a bit laggy it seemed fine running Android 4.1.2. There were a few issues like the S-Note application would crash and it was running slow so I decided to...