I have been using this network from six months and never faced any signal issue.Wherever I go, I got a decent amount of signal. Calling, browsing etc is very nice and were of no issue.
But there is one issue.The special offers they provide don’t change frequently. They stick to only those offers which are six months old.
From six months, they have not updated nor gave any attracted offers to my number.This was the defect I found in Idea.