what telco are u using and when did u conduct the test at?
our 5G are mmwave type which means the more walls, the slower the speed

if it's not mmwave
u can't reach such insane speed

the modem is capable of 1.2Gbps doesn't mean u can remotely reach it in reality
can u find any speed test result...no need majority...just 1 that showed 1Gbps on 4G?

meanwhile, i don't even have 1...i have 4 picture showing 800Mbps above on 5G easily
it doesn't even need the right conditions

and that gets worse in malaysia on malaysian telco

like i said we don't have low or mid band....we use mmwave
it's either high speed or no speed
i've never tested 200-480Mbps on 5G in malaysia yet
it's either 800Mbps above or pass a wall or corner and the speed just disappear

tested in SS2, SS19, bukit jalil, the area beside pavilion BJ, bukit bintang
all the same results

i'm not using samsung, am using motorola right now
i'm not at klang valley now to test and i might not have a chance to test because unifi mobile is ending their free 5G pass

but i can assure u it's mmwave because of the range....it's extremely short range...over a wall and that's it, either the 5G won't move or it bounce back to 4G
it works perfectly find outdoor but indoor have to beware...1 wall = 1 obstacle

u can go to the telco section of lowyat, many people there faced the same issue
for me outdoor, once i exited my taman which is less than 100m, the signal bounce back to 4G