Got it in KLSentral
funny part the story goes like this
I was asking a guy at counter n he said no prepaid sim since only have postpaid with phone, so i asked need to wait for how long to get it? he said not sure
suddenly a guy came from a small room from the side ask me what phone am i using, i replied Mate 8. He told me maybe cant use I said can one since it is all band phone. He than asked me bring the phone or not? i said got ... he than say lets try first so he pulled out a sim ... i said nano sim to him.
Put inside my phone, he asked me to make the yes sim 4g .. so after a few sec registered to YES 4G ... rejoice ...
then the guy asked me want to buy sim? i said if prepaid yes lah ... so he went back to the side room and pull out 2 stack of sim card packs. All start with 018 688 xxxx. I chose one and paid RM10. Asked him where to topup he said at portal.
so than i happily using it lah ... data wise maybe still best effort ... call i tried but failed maybe because i am in my office building
so i think they will pull face since according to the guy a lot of ppl asked buy most of time phone not supported

Well at least you they ask and try to help. For me, when i ask, they straight away tell me "NO". That all. I ask when, next answer is "Tak Tahu" that all. No further interest at all. I ask those display is the rack is Yes sim card, then he answer "YES" but "TAK JUAL" . That all. Total no interest in doing business.