Celcom postpaid customers who are subscribing to a monthly mobile Internet plan (1GB and above) and owns an LTE supported device including HTC One, Samsung Galaxy S4 or iPhone 5 can now get a new 4G LTE SIM card upgrade for free from either Blue Cube Menara Celcom or Blue Cube Sunway.
HTC One and Samsung Galaxy S4 users will get a Micro SIM card, while iPhone 5 users will get a Nano SIM card.
Click here to check for Celcom 4G LTE coverage.
The download and upload speed of Celcom 4G LTE is quite impressive. I can get a 44.68Mbps download speed and 18.1Mbps upload speed when connected to Celcom 4G LTE.