I applied through college or university. The process took 1 day. I interviewed at IDEA Cellular (Mumbai) in Feb 2012
Interview
Was part of a pool campus in mumbai where there were about 200 ppl from many colleges. Very long process had a IQ test, gd, pi and then at night 9pm was happy after the entire tiring day to be selected with a selected set of 6 ppl.
Interview questions [1]
Question 1
Questions were more oriented to find your locus of faith, ur nature and ur willpower about doing the work. The most unexpected was the industry size of hotel industry which was my last job and my graduation field. Handled it well as had some idea about it.