Help/Support Samsung Galaxy Note 8 keeps randomly restarting

[DrifterDan 604 Galaxy Note10+ 12]

Hi guys! Been a few years since I've been here. I'm gonna cut to the chase.

I have a Samsung Galaxy Note 8, a US-market version with model number N950-U. Here's the twist: I'm in Malaysia - where only the Global version is sold. 

I bought this phone from a seller that advertised this phone as used and reconditioned, because I really was looking for a US spec Note 8 because it had a better processor and GPU, but I assumed that the seller booted an Android version that would let me use local carriers because the phones used different software for places across the pond. Correct me if I'm wrong, but could this be a potential cause for random restarts? Sometimes it would restart to the first boot screen with the "powered by Android", other times, it would boot me to the animated Samsung boot logo.

Other than that, I can't use certain Samsung apps like Samsung Pay or Samsung Health with an error screen that says that "Samsung Pay has been locked due to an unauthorized modification."

What do y'all think that would solve this problem?

[K_K 166.3k Asus Transformer Jelly Bean]

Throw it in the bin and buy an Phone,  as it clearly is making you see triple with the same three topics you have placed

[DrifterDan 604 Galaxy Note10+ 12]

Those repeat topics were by mistake due to a network disruption.

[Rook 552.1k Pixel 14 Donor]

Hey,

Sounds like the Bootloader/OS has been unlocked and rooted in order for it to work for your country, which would explain why Samsung Pay is no longer available.

This can be a cause for random restarts, yes. Especially if it’s a 3rd party ROM that has been installed instead of the official one. Though, it could also be something you may have installed?

[DrifterDan 604 Galaxy Note10+ 12]

14 hours ago, Rook said:

Hey,

Sounds like the Bootloader/OS has been unlocked and rooted in order for it to work for your country, which would explain why Samsung Pay is no longer available.

This can be a cause for random restarts, yes. Especially if it’s a 3rd party ROM that has been installed instead of the official one. Though, it could also be something you may have installed?

Thanks for the explanation. 

Within a week after I bought it, I suspected that it was a live wallpaper app that I downloaded and used but I removed it ever since, and it still keeps restarting to this day.