Basically, if you're interested in going for the 24 months contract, you need to pay RM999 for the phone + RM500 deposit (which will be used for your monthly bills) + RM68 for the data unlimited. So in total, you need to pay RM1567. Remember, the RM500 deposit will cover your first few months of bills, depending on your usage. However if you choose the 12 months contract, then you buy the phone for RM1399 + RM300 (deposit) +RM68 data unlimited. Same as the 24 months details. Your deposit will cover your usage till it depletes, then you continue paying for your usage. They also offer smart save. Below is a quote I got from a forum. Just a rough idea on what you'll be paying depending on your usage.
example 1
68 + phonecalls/sms/mms(150) = RM68 + RM150 = RM218
so RM218 is above the RM200, which u will get FREE internet Unlimited
So the the amount u need to pay is RM218 - RM68 = RM150
example 2
68 + phonecalls/sms/mms(50) = RM68 + RM50 = RM115
so RM115 falls under the 25% discount
so the amount that u need to pay is (RM68-25%) + 50 = 51 + 50 = RM101
example 3
68 + phone calls/sms/mms(20) = RM68 + RM20 = RM88
you have to pay RM88
Not a bad deal if you need internet connection on the go constantly and not forgetting the HTC Legend. I know a lot are also waiting to see if DiGi will release the Desire. I think they will. It's just a matter of time.
If you need more info, you can check out DiGi's fan page and thier FAQ page here
http://www.facebook.com/notes.php?id=115798033817#!/notes/digi-telecommunications/new-dg-smart-plan-faqs/416090686070