The terror in Indian cell phones (Asia Times Online)

Due to a perceived security threat, cell phones cannot be used or carried by any civilian in the presence of President Abdul Kalam Azad, Prime Minister Manmohan Singh, his predecessor Atal Bihari Vajpayee and Congress president Sonia Gandhi. They are also not allowed inside parliament house, the Race Course Road where the premier resides and the Home Ministry, where Home Minister Shivraj Patil attends office.

The authorities have no solid reason for the ban but are continuing it 'just in case'.