Description For Qualities 

Original: Its Original 100%.

OEM NEW: Original and brand new products from original manufactures. (The highest quality standard

OCG (Original Changed Glass): Products disassembled from second-hand devices and then been refurbished. (Original quality with refurbished new appearance)

OLED: Organic Light-Emitting Diode.

BQ: Best Quality.

COMPLETE: With small parts Front camera, Earpiece speaker, Earpiece speaker cover, LCD shield plate, and/or Home button pre-installed.

NoEU: Have no guarantee in Europe.

Grade A: Battery Health 85% and above no scratch or dent.

Grade B: Battery health below 85% with some scratch or dent.