A spokesman of the Pakistan Telecommunications Authority (PTA) said mobile phone services may remain suspended in several parts of Pakistan's capital for up to the next three days.
"The interior ministry has issued directions to suspend mobile phone and wireless services," PTA spokesperson Khurram Mehran was quoted as saying by Dawn newspaper.
He said that wireless Internet services will also be suspended ahead of the anti-government rallies scheduled on August 14, Pakistan's Independence Day.
Cellular services have already been shut down in some parts of the city.