Vodafone is a great network in any smartphones or phones, whereever you go you find the networks of it. it’s great in internet service. yah 3g is associated with Airtel 3g but speed is good in data roaming. I personally use this network and yah it it’s veryfast as my expreience
talk about call rates when you buy a new sim call rate is 40p/min(Local & STD) after 1 month your callrate is 1p/sec. this is too high. Internet plans start from rs 5 to your choice
data usage policy is very good from vodafone. sms plans start from rs4 to to your choice. very good network at all