Zong 4G launch date is 27th September 2014. Its announced today via TVC commercial. Zong have announced this date a few days ago and have planned to launch 4G in PC hotel Karachi via Ceremony. TVC states
The Fastest is about to going more Faster by Launching 4G network in Pakistan.
Zong have also announced that it is launching this 4G service for Free in first four cities. These cities will be Lahore Karachi Islamabad and Rawalpindi. As in the past happened with 3G launch, few selected areas will have that 4G services in these four cities.
To be able to use 4G you must replace your older SIM from Zong to use 4G network. So if you want to use this 4G service then you should go to Zong franchise and replace your older 3G SIM with Zong 4G SIM. Mega.pk shared an image of 4G SIM given below
Here is the TVC available at dailymotion.
Zong 4G launch will be kept low due to already launch process of Zong Super 3G.