Optus explicitly state they will only change contract customers to an equal or higher contract. You should try:
1) Contact Optus and ask for the current payout figure on your contract (it may be much less than you think)
2) If you don't care about the phone number you could try swap bills (and SIMs) with someone else who wants more data.
Hi there Pulapalu,
Just wanting to confirm you're in a contract? If so then some good advice from Peter. If you started on a lower plan with an appropriate amount of data then it's likely you'd be paying more for the new handset you got with the plan so it kind of balances out. I'm the same, I think my plan comes with 50GB but I only ever use about 5GB each month.
It seemd that Optus is the only provider that doesn't allow their customers to downgrade their plans, that doesn't seem entirely right.
Maybe it'll just be easier to cancel and go with Telstra, at least you have actual control over what you pay for with their service.
Confirming Peter's advice, your best bet is to contact Optus to find out what the fee is. It's not a matter of being allowed to, it's what is the cost of doing so.
Customers agree to enter a contract to receive the new phone at subsidised cost or $0 upfront that comes with it, fees would apply to reduce/break this agreement at a later date. I don't think any provider would for example give a customer the latest iPhone for an agreement of $80 over 24 months and then agree to reduce that to say $50 for the remaining 21 months under normal circumstances which in essence is what I think you're asking?