Complex sentence: Southern Networks Ltd launched its digital system in the metropolitan areas of Karachi, Lahore, Islamabad and Rawalpindi in January 2004 and are also planning to launch in several key cities in the Central Punjab.
Split into simpler sentences: Southern Networks Ltd launched it's digital system in the metropolitan areas of Karachi, Lahore, Islamabad and Rawalpindi in January 2004. Also planning to launch in several key cities in the Central Punjab.