I would like to buy a Xiaomi note 4 but know nothing about how to go about it.
where would i buy it from?
which one should i buy?
how long will it take?
how do i go about paying for it due to it most likely not being in AUD?
how do i remove adware?
sorry for so many questions i am completely new to buying a mobile phone from overseas
Consider buying from vickmall (I've bought from there before without issue).
Download the latest global rom from official miui download site. Copy the recovery rom to the phone, use the "Update" app to install by selecting the downloaded ROM. Then do factory reset for good measure.
PS: just checked vickmall and price isn't great and no stock. Consider HKGoldway on AliExpress (I've not ordered from there but read reasonable things from others). Only issue with AliExpress is you can't use PayPal so no protection from paypal or refunded return shipping cost.
Just my 2c.