Have been going through ACL recently:
You can ask for a replacement or refund if the problem with the product is major.
Replaced products must be of an identical type to the product originally supplied. Refunds should be the same amount you have already paid, provided in the same form as your original payment.
The business may take into account how much time has passed since you bought the product considering the following factors:
type of product
how a consumer is likely to use the product
the length of time for which it is reasonable for the product to be used
the amount of use it could reasonably be expected to tolerate before the failure becomes noticeable.
For a major problem with services you can cancel the contract and obtain a refund or seek compensation for the drop in value of your services provided compared to the price paid.
Does it mean I can ask for a refund when the screen stopped working on my 1 Year old iPhone?