What checks do refurbished phones go through?

All refurbished phones are extensively checked for any cosmetic damage.

There's an LCD and screen inspection at a distance of 250-300mm from the surface which checks for spots, specks, dust, debris, stains, smudges, bubbles, bright or dark areas and scratches.

The front case, keypad, rear case and both sides are inspected for scratches, plastic imperfections and dull or shiny spots.