I am using idea sim car last 10 years. its network coverage is very good than others and speed of internet is very good on 2G network, 3G speed is best. network of idea reached in villages and towns but in villages network not found in houses, get network go on roof or any height. idea’s customer care helpline is very bad many many numbers and waiting after calling and charges also applied. calling charges very high and internet recharge is more costly than others. many time they cut your balance automatically and you can’t blame because customer care service is very bed.