Why change?

I just update, look here How to Activate LTE

Apple Carrier Software LTE Update targeted 15/6/13 onwards
source: CS Communication

stingy and selfish in investing new equipment.

few weeks ago when I again complaint to careline about HUSM poor coverage, do you know what he told me?

Celcom handle the case based on the total number of reports.

if only mine report, Celcom will close it within 48 hours without doing anything, but if at the same time 10 reports or more has been lodged, then only Celcom will work on this issue.

the same, my friend who work in telco site, he told me that if VVIP complains of poor or no coverage, they can even set up a new site or install a new antenna specially face on that VVIP area.

so, what I learnt from is, never trust the coverage map, get a prepaid to test until you sure which telco has covered you the best, then only go deeper.

Mine for now free surfing until 31st December 2013 because LTE is still in beta testing for customer. 

True. Mine too.
You wont be charge after reaching your cap GB data plan. But it will be getting slower afterwards.
But so far, i never experience it before.

do i need to change 4g sim card to enable LTE coverage?