Which areas of Pakistan have 4G services?

#1
I am coming to Pakistan for about 2 months from US and I have heard that Pakistan now has 4G services. I need a fast connection and after 3G it is obviously 4G, and I need to know exactly which parts of Pakistan provide 4G services and what the performance of 4G service is like.

Would I be better with 4G or 3G?
 

#2
4G is available in major cities like Lahore and Islamabad, although 4G is supposed to be faster than 3G, many users still say 3G is better than 4G. I think until the 4G service gets a bit better in Pakistan it is wiser to stick with 3G, and because the availability is in a few places only it would be better going with 3G which has more availability.
 
#3
4G is available in the following areas according to the service providers:

PTCL
Islamabad, Rawalpindi, Lahore and Karachi

Zong
Islamabad, Rawalpindi, Lahore, Karachi, Faisalabad, Peshawar and Quetta

Warid
Lahore, Karachi, Islamabad, Rawalpindi, Faisalabad and Gujranwala
 
#4
I am not certain but a few more cities have also been added. 4G only performs well in some parts where it is covered, if you dont want to risk it then I suggest you stick with 3G.