B28 band means NR band ?  Or LTE band ?

Then it is not possible for @Sam Leong to get 1.3Gbps on locked B28 band.  Must meant locked to N28 then.

You mean rahmah?

The reason why I will never port my main line into ytl

Ytl can use as backup line only

The Malaysian 5g network is the same network irregardless which service provider you get it from, is that right ? Meaning if one can get 800 Mbps from one service provider, likely if you get from other provider, the speed will be more or less the same. Is that correct ?

No.
Phundeck LJ maxsheet 5G is total sheet.

Same lokasi same 5g router:

YES 5G Home: max speed no cap, can torrent without VPN
U Mobile 5G: max speed no cap, cannot torrent without VPN, torrent must turn on VPN

But,
LJ CBB Maxsheet 5G: speed throttle to 300-500mbps, some apps or site like fucuking jewtube fucuking buffering, anything google, latency at fucuking least 2 seconds before anything can load. Shopee Live fucuking lag. But can torrent without VPN.

Once I turn on VPN, jewtube, google services suddenly become very fast, Shopee Live dem smooth, but speed still 300-500mbps.

I have at least 5 fucuking tickets with maxsheet, told them no VPN, everything slow, once turn on VPN, fast.
Ding dong ding dong until so called apalan 3rd level technician call me ask again apa masalah, i had to explain to him for the 8244634th times the issue:
No VPN slow, turn on VPN everything fast again. That so called malan 3rd level retardian have the audacity to tell me maybe it's the sim card problem ask me go center change sim card. Tunama geh hi minyak api naik sampai kepala hati terbakar that SH told me change sim card.
Maxsheet not only sheet network, staff also total sheet.