Every wholesaler uses the words "OEM" and "Grade A" and no two of them mean the same thing by it. This is the grading system we use at ScrnFix — published openly so buyers can compare like for like, and use it to interrogate any other supplier too.
Scr nFix grading standard
| Grade | Definition | Best for |
|---|---|---|
| OEM | Original components, factory production or pulled from genuine assemblies | Flagship repairs, picky customers |
| Grade A | New manufacture on original-spec tooling, per-unit QC passed | Everyday shop stock — best value |
| Copy | Aftermarket build, price-optimized | Trade-ins, refurb, insurance work |
Where grades matter most
Screens: the panel determines brightness, touch, and True Tone — grade differences are visible across the room. Batteries: BMS quality decides whether iOS cooperates. Mechanical parts (trays, buttons, SIM trays): copy grade is usually fine. Flex cables: insist on Grade A minimum — a torn flex during install on copy stock is wasted labor.
How to test a supplier's grade claim
Order a 10-piece mixed trial across grades and models. Compare brightness side by side, run a full charge cycle on the batteries, and tear down one charging port flex to check solder quality. Grade claims that survive that test are real. Ours do — see the full catalogue.
FAQ
Is OEM always worth the premium? No — Grade A wins on price per comeback for most walk-in work; reserve OEM for flagship displays and batteries.