Did you have authorise service dealer in Pakistan?

Check here for locations around you https://locate.apple.com/pk/en/service/?pt=3&lat=33.7155649&***=73.0759055&address=Islamabad

One I found is

FUTURE TECH (RAWALPINDI)9.1 km

Office No. 136-B, First Floor,

Malik Arshad Plaza, Chandni Chowk, Main Murree Road

RAWALPINDI, RAWALPINDI 46000

+92 51 4571091-92

https://www.futuretech.pk

Be advised if there is an authorized service provider in Pakistan, warranty does NOT cover accidental damage. If the glass is broken on both the front and back, the phone cannot be repaired. It will have to replaced. This will require you purchase an Out of Warranty replacement, which you can expect to cost about 60% of the cost of the phone when new.