Girls colleges in Karachi are often called by various names. Islamabad girls are notorious for chatting on their mobile phones for hours, thanks to recent boom in Islamabad telecommunications market. Some of the resources are listed here.
Ufone offers great video messages and multimedia messages are also quite popular. If you think she will hand out her pictures just to amuse you, think again. So, you keep searching the net for mobile numbers or pictures of girls in Karachi.
Internet! A girl is alone in a sense that when she does not have anyone to call on her mobile phone, she feels lonely. Hotpakistanigirl.