Grade A Parts — OEM, Grade A, Aftermarket Explained (Singapore Guide)

Grade A, OEM, aftermarket — replacement parts are not all equal. The quality of parts used in your phone repair determines how long it lasts and how well your phone works afterwards. Here’s what each grade means and the right questions to ask before agreeing to a repair in Singapore.

Why part quality matters

A cheap aftermarket screen may look fine on day one and develop dead zones, colour shifting, or backlight bleed within weeks. A poor battery may hit 80% capacity within months. Asking about part grade before agreeing to a repair is one of the most important questions you can ask.

The parts quality spectrum

OEM (Original Equipment Manufacturer)

What it means: Parts manufactured by the same supplier as the original — or supplied directly by the brand

Quality: Identical to the original part

Availability: Limited to Apple and Samsung authorised service providers. Very rare from independent shops at competitive prices.

Grade A (OEM-equivalent)

What it means: High-quality aftermarket parts matching or very close to OEM specifications

Quality: Excellent — most users cannot tell the difference from OEM

Used by: Certified Phone Repair — for all screen and battery repairs

Generic / Aftermarket

Quality: Variable — can be acceptable, often poor

Risk: Parts may fail within weeks or months. Cheap battery cells can swell. Generic OLED panels frequently show green tint or burn-in faster than genuine panels.

⚠️ Red flag: If a repair price seems unusually cheap, ask about part quality first. A $40 screen replacement for an iPhone 14 almost certainly uses generic parts.

Does Apple show a warning for non-OEM parts?

Yes — from iPhone 14 onwards, iOS displays a notification in Settings → General → About if a screen, battery, or camera replacement is not Apple-authorised. Grade A parts will trigger this notification. The notification does not affect phone function.

What our 90-day warranty means

Our 90-day warranty covers the part and workmanship. If a screen develops a fault unrelated to physical damage within 90 days — dead pixels, touch issues, backlight problems — we repair or replace it at no charge.

Related terms

OLED vs LCD — screen type and part quality together determine repair price
Grade A Battery — how part grading applies to batteries
Battery Health — battery capacity directly affected by part grade