Keep on dreaming. Warid will NEVER be able to launch SIM based 4G/LTE service in Pakistan. Their application has been firmly denied by PTA. Government is not that stupid after all.
If you have noticed, all advertisements by Warid regarding 4G LTE have been taken down now.
Warid will be buying bandwidth from Zong (which will remain the only 4G LEGALLY operational network in Pakistan), to offer a USB STICK based 4G service. But they will be paying Zong to share their network to offer this 4G NON-SIM based service in near future. This will be launched once Zong officially launches its 4G service in Pakistan.
That's why Warid is only testing on DONGLES.
If you have anyone in the Telecom sector in decent position, you may ask him and he will confirm this to you.
WARID can never and will never launch SIM-BASED 4G/4G LTE service in Pakistan. It will be a Dongle service with the help of Zong's 4G infrastructure.
Warid only fooled people for a bit to ensure that they don't lose subscribers in large numbers.