iPhone 6 - sim free in excellent working condition

I purchased it years ago from giffgaff and is unlocked

It’s always been on the case and had the screen protector on

Apple green case included

I’m not 100% if it’s 16 or 32 gb. I thought it was 32gb.. bear this in mind when buying as I don’t do refunds. I’ve factory reset it now hence can’t double check..