The first mobile purchased in my family is sony eriscson k510i and my dad chose idea as the first sim.it has been 15 years. Network coverage is awesome all over. We have many best offers in talktime(idea to idea 10p/min), data packs(they do charge high but speed is good), sms packs(these have become very cheap nowadays) and manymore.
There are many stores available providing good service. The customer care service is also good. It is now converting its 3G users to 4G users.
I’m happy the first sim we chose is really good and we almost had 10 sims in our family