A refurbished iPhone or Macbook could save you a lot of money — but there are some things you should consider.

A list of top Android and iOS smartphones under £500, new and refurbished, including Google, Apple and Nothing.

It's called Amazon Renewed, and it's where you can buy "expertly refurbished products at great prices". Any product that's on there goes through a special process, so it's not like just buying a ...