Just got my sim card replaced to nanosim with 4G LTE support at Menara Celcom Jalan Semarak. Similar excuse about no stock, but I pushed for with reason that I'm leaving for work outside the country tonight, and I need the sim card immediately (which is true anyway).

Here's my speed test as I sped away from Menara Celcom, Jalan Semarak and Jalan Tun Razak towards Bukit Bintang.



Now I alternate between Celcom LTE(on iPhone 5) and Maxis LTE(on HTC ONE and SGS4) data package subscribed 2 weeks ago. Will be terminating YES4G soon.