The 2nd line you mentioned ... its not JUST in Hafeez Center. Its almost everywhere.
handsets arrive in Pakistan without any box. They are packed here in Pakistan, that means their Accessories, their packings ... everything in Done here. The companies like MZ, Brightex, even Homeshopping ... they all do this. Heck they can even make a Duplicate IMEI matching box, and you can't even tell if its fake or original. (Laptops case is not different)
Almost every 2nd box packed handset is opened to check (or to show a customer) so yeah ... its totally your luck if you get a untouched handset.