I’m currently studying in SASTRA University. here, Idea cellular signal is so poor that even sometimes we get " No Service" notification also! 3G signal is also very rare in the hostels, 2G speed is damn horrible. frequent call drops too! thinking of changing my network too! tariffs are high, signal is poor, 1 week ago, I went to Tiruchirapalli city to get new 4G SIM card for my existing number, the customer centre replied that" We are Sorry, We are Out of Stock"!