Now you can check your vodafone 2g/3g remaining data balance and data validity by dailing *111#, it’s working in Andhra pradesh circle, not sure about other circles , try it....
When you dial *111# you will get this message...
Reply with 6 ( data plan details) .....after replying ,you will get two options 1) active data plans 2) usage allowance.
Reply with 1 to know your Active data plan ...( I subscribed 25rs 3g data pack, it gives 25mb, val 24hrs.....for testing purpose )
Reply with 2 ( usage allowance)to know your remaining 3g data balance & data validity.....2mb used , remaining 23mb....total 25mb given.
You can also know your 2g data balance in the same way...
It's working in ap circle, i'm not sure about other circles.