If you buy a non-PTA phone, you must register it with PTA and pay tax, or it will stop working on local SIMs.
CNIC or passport?
Tax on passport registration is usually lower than on CNIC, but you can only use a passport within 60 days of arriving in Pakistan.
How to pay
Generate a PSID on the PTA DIRBS portal, pay through your bank app and the phone gets registered in a few hours.
