Vodafone Free GPRS Trick

Account Name: Vodafone_gprs
Homepage: http://live.vodafone.in
User Name: (no need)
Pass: (no need)

Access Point Settings:
Proxy: Enabled
Proxy Address: 10.10.1.100
Proxy Port: 9401
Data Bearer: Packet Data

Bearer Settings:
Packet Data Access Point: portalnmms
Network type: IPV4
Authentication: normal
User Name: (no need)
Password: (no need)

IF that happen this settings is not working then change the proxy port number too.
Proxy Port: 9401

Try only at low balance.