redeeming and using an Apple gift card
I just received an Apple gift card after sending back an old iPhone. How do I redeem it and then use it?
I opened the Apple store app on my phone and found an area for adding gift cards although I can't find it again now after closing the app, but I went to the e-mail on my computer and clicked on a link and eventually found the PIN for the card, but when I typed the PIN into the Apple store it wasn't accepted.
This is totally new to me so the more detailed any explanation is the better.