how is the ideas coverage in mumbai, i have been airtel user since 4 years but since last 4 months airtel is down in our area ulhasnagar 4 (maharashtra circle)so i decided to go for MNP ...i heard vodafone is awesome in mumbai, but at my home vodafone doesnt have the coverage so i am left with two options either reliance gsm or idea (their coverage is full at my home and at my workplace andheri (mumbai circle)) suggest