PTA tested all four networks in 11 cities across Pakistan, downloading a large test file for three minutes on each network.
Results: Jazz Fastest in 9 of 11 Cities
Jazz came first in: Quetta (29.71 Mbps), Peshawar (35.07), Multan (44.03), Lahore (42.12), Islamabad (38.09), Karachi West (50.26), Sukkur (21.73), Hub (31.70), Faisalabad (38.47).
Zong came first in: Abbottabad (29.30), Rawalpindi (28.35).
All networks beat PTA’s 4 Mbps minimum everywhere.
Upload Speeds
Zong ranked first for upload in 7 cities — important for video calls and sending videos. Jazz came second.
Conclusion
Jazz leads on download speed in most cities, while Zong leads on upload. Your exact street and building can differ, so test at your location before choosing.