Was there last week. Celcom is the preferred network, but can be slow at times. High Ping and latency. If manual select to umobile, very fast speed and low ping low latency. But umobile got some blind spots where you'll have no network sometimes.
All the time when I'm across I'm on Celcom - it suits my usage within & outside Malls.Some suggested to switch to 5G to avoid the lag, would it work?
My phone auto switch between 4G & 5G... not all locations are 5G ready.
