Sorry if this has already been answered but nothing turned up in my search.... I have a $50 Apple gift card I have added to Passbook on my iPhone. I am planning on applying it towards the purchase of my Apple Watch that I am going to pre-order online on the 10th. I do not see anyway to apply it using the Apple Store app on my iphone. Does anyone know if it is possible to apply the gift card toward the first $50 and then pay the rest using my credit card using the App on my phone?? TIA.