When you buy used iPhones wholesale, the grade on the invoice tells you what you'll find when you open the box. It also decides how you price the phone, who you sell it to, and how many come back. This guide explains what A+ and A- mean at A1Wireless4U, how to pick between them, and what to ask any supplier about grading. Why grading matters Two iPhone 14s with the same storage and color can sell for very different amounts depending on how they look and how the battery holds