3g usb modem for andorid

I have been looking for a solution to make connection to 3g network with dial up ppp connection style over a mobile phone. all current 3g operators over here is charging 0.00256 usd per kbyte. 650kbyte for 1 minute voip talking via betamax costs 1.8 usd. but if I make the connnection via 3g usb modem over windows it costs me 0.02 usd per minute. can someone tell me if there a andorid phone which will make 3g connection over ppp. thnx