that is true one for 3 pin ,samsung charger may will compatiable with original one other country .

That is your problem ,cause of you one ui problem . Why need to root your phone ,samsung can detect ,knox is stronger than you think even want to change motherboard you can't replace your own

UHQ samsung is exclusive system which high res codec bypass since Samsung support mostly audio codec international requirements except spatial audio codec and dolby atmos is special than other model with stereo surround which weird ,samsung and do...

Yeah ,5g not stable ,they think send high radio frequency high ,actually send high bandwidth speed .