Used Smartphone Grading Standards

Grading standards

What Grading Means

Cosmetic grading gives buyers a standardized, objective description of a device's physical condition. SmartChoice uses four grades — A/A+, A-, B/B+, and C/C+ — assessed against screen condition, body condition, dents, cracks, touch-detectable wear, and battery health. All devices are 100% functional unless stated otherwise.

Method

How a Grade Is Assigned

There is no industry-wide grading standard. Back Market, Swappie, Refurbed and wholesale distributors each publish their own criteria, so a Grade B unit from one supplier can match a Grade A- from another. That inconsistency is the single biggest source of disputes between wholesale buyers and sellers. The fix is not picking a “correct” standard, because none exists. It is confirming the criteria in writing before ordering, then checking arrivals against it.

Every SmartChoice unit goes through the same four stages before a grade is assigned:

1. 1

   Intake

   IMEI recorded and cross-checked against blacklist databases; activation lock confirmed removed.

2. 2

   Diagnostics

   Full hardware test covering display, cameras, audio, connectivity, sensors, charging and battery health. Battery capacity is read through OEM diagnostics as a percentage of original design capacity, with cycle count where the tool reports it, not from the handset’s own settings screen, which can misreport after a battery swap.

3. 3

   Cosmetic grading

   Inspected unit by unit under standardized 500-lux lighting at 30cm against the criteria above. Never batch-sampled.

4. 4

   Factory reset

   Full reset performed, Find My and Google FRP removed and verified.

Cosmetic grade and functionality are independent. A Grade C/C+ unit looks worn but passes the same diagnostic checklist as a Grade A/A+ unit. Anything that fails diagnostics is not graded at all; it is separated into a parts and repair category and priced accordingly. Cracks are the other hard cut: a crack on the front screen or the back glass removes a unit from standard grading regardless of how minor, because a compromised seal is a durability risk rather than a cosmetic one.

Grade detail

Grade A/A+ devices are the highest quality tier in our inventory. These units show no meaningful cosmetic wear and closely resemble brand-new devices.

+13 more

Overall condition

Pristine, near new condition

Screen scratches

No visible wear under normal light

Body scratches

None visible under normal light

Dents

None

Cracks

None

Touch detectable wear

None

Buttons

Perfect

Battery health

≥85% original capacity

Functionality

100% tested

Complete

✓ With covers & battery

Grade detail

Grade A- devices are in very good condition — light signs of use that only show up on close inspection.

+3 more

Overall condition

Very good

Screen scratches

Light scratches, invisible when display is on

Body scratches

Light scratches permitted on back

Dents

Pinhead-sized dents allowed, not visible at 30 cm

Cracks

None

Touch detectable wear

Faint (some scratches)

Buttons

Perfect

Battery health

≥82% original capacity

Functionality

100% tested

Complete

✓ With covers & battery

Grade detail

Grade B/B+ is our most popular tier and the sweet spot for most B2B resellers — solid quality at a competitive price.

+16 more

Overall condition

Good

Screen scratches

Light scratches, some visible when display is on

Body scratches

Noticeable marks on back/edges

Dents

Minor dents allowed

Cracks

None

Touch detectable wear

Yes (some)

Buttons

Perfect

Battery health

≥78% original capacity

Functionality

100% tested

Complete

✓ With covers & battery

Grade detail

Grade C/C+ devices show obvious signs of everyday use and are priced accordingly, while remaining fully functional.

+12 more

Overall condition

Obvious signs of everyday use

Screen scratches

Deep scratches (no cracks)

Body scratches

Obvious scratches, possible dents

Dents

Multiple small dents or 1-2 medium dents

Cracks

None

Touch detectable wear

Yes (likely)

Buttons

Perfect

Battery health

≥73% original capacity

Functionality

100% tested

Complete

✓ With covers & battery, no missing parts

Component detail

Cosmetic Criteria by Component

A unit's grade is set by its worst component, so it helps to know how the screen, the frame, and the back glass are each judged. They are inspected separately because the materials fail differently: glass scratches and chips, metal and plastic housings dent and discolour, and back glass shares neither the screen's function nor its failure modes.

Screen

The screen carries the most weight in a buyer's first impression, so it is where the criteria are strictest:

• A+: no scratches visible at any angle under standard lighting; no dead pixels, no digitizer issues.
• A: no scratches visible under normal lighting; scratch-free in everyday handling, indistinguishable from A+ at arm's length.
• A-: light scratches visible under normal lighting, no impact on touch response.
• B/B+: visible scratches or light wear across the surface; no chips or cracks.
• C/C+: noticeable wear, possibly minor chipping at the glass edge, with touch response and display function unaffected.

Frame and housing

The frame is judged on dents, edge wear, and discoloration rather than scratches alone:

• A+ / A: no dents, no visible edge scuffing, no discoloration from wear.
• A-: minor, hard-to-notice edge wear under close inspection; no dents.
• B/B+: light dings or scuffing visible under normal handling; frame structurally sound.
• C/C+: more noticeable dents or wear, with no structural damage affecting fit, buttons, or port alignment.

Back glass

• A+ / A: no visible scratches, no chips; glass sits flush with the camera housing and frame.
• A-: faint scratches visible only under close inspection or direct light.
• B / C: visible scratching across the surface, with no cracks and no compromise to the seal around the camera module.

Choosing a grade

Matching Grade to Market and Platform

Choosing between the mid grades is one of the most consequential sourcing decisions a reseller makes. Get it wrong and you either overpay for cosmetic quality your market doesn't reward, or you stock devices that generate returns and platform penalties. Neither B nor C means damaged — both are tested, fully working devices — but each resale channel accepts a different floor:

Geography follows the same pattern. Grade B is the baseline for Western European platforms and buyers. Grade C turns fast in Eastern and Southern European markets — Poland, Romania, Bulgaria, and the budget segments of Spain and Italy — where the buyer pool prioritising affordability over cosmetics is large.

Choosing a grade

Grade A vs A+: When the Top Grade Pays

Both top grades share the same 85%+ battery floor — the separation is purely cosmetic. A+ shows no scratches at any angle under standard lighting; Grade A meets the same bar in normal use, with any distinction appearing only under the very closest inspection at sharp angles. The wholesale gap between them runs €5–15 per unit, against the €28–35 step from A down to B — a small premium for the jump from “scratch-free in normal use” to “scratch-free under any inspection”.

Three buyer profiles get their money back on that premium:

• Quality-sensitive markets. German consumers return A- stock at 2.6% versus 1.8% for the same grade sold to French buyers. At that level of cosmetic sensitivity, A+ eliminates the risk of “not as described” disputes.
• Back Market top-tier listings. Their algorithm weighs return rate against listing quality; A+ gives the most cosmetic headroom to sustain a low return rate at the tier where grade discrepancies draw the most visible seller penalties.
• Corporate and fleet buyers. IT asset programs and corporate refresh cycles sometimes specify A or A+ explicitly in procurement requirements, regardless of downstream price sensitivity.

In price-driven markets where buyers prioritise value over cosmetics, the A+ premium sits on headroom the market doesn't reward. For most resellers, Grade A is the practical sweet spot: it meets the expectations of premium buyers at a lower wholesale cost, and A+ — at 8–12% of intake, the scarcest band of all — is best reserved for the three cases above.

iPhone specifics

iPhone-Specific Checks

An iPhone can be flawless cosmetically and still be worthless to a reseller. Activation lock, a non-genuine display, or a logged parts replacement will each cost you either the sale or the margin — and none of them are visible in a photograph. These checks sit alongside the cosmetic grade on every iPhone we ship.

Activation lock and Find My

The single most expensive thing to get wrong. An iPhone still tied to a previous owner's Apple ID cannot be set up, cannot be resold, and cannot be unlocked by anyone except that owner or Apple with proof of purchase. Every unit we ship has Find My confirmed removed at intake, verified after a full reset rather than taken from the seller's word. Sourcing elsewhere, check it on arrival: a device that boots to the “iPhone Locked to Owner” screen is a write-off, not a warranty claim.

Parts and Service History

iOS logs component replacements under Settings > General > About — on iPhone XR and later you may see “Unknown Part” entries or warnings that the display, battery or camera could not be verified as genuine. This matters commercially in two ways:

• Battery: a non-genuine battery suppresses the battery health percentage in Settings entirely, so the number you would normally price against is simply not there.
• Display: a third-party screen usually costs True Tone, and can cost Face ID if the replacement was done without transferring the original components.

A logged non-genuine part is not automatically a defect — it is a disclosure item. Buyers who discover it after the sale treat it as one. True Tone disappearing after a screen replacement is the most common quiet fault in graded iPhone stock, and Face ID follows the same pattern: the module is paired to the logic board, so a repair without the original parts can leave it permanently unavailable while everything else tests clean. Both are invisible in a cosmetic inspection, and both generate returns once an end customer notices.

Battery reporting and carrier lock

Apple's Maximum Capacity figure in Settings can be missing or misleading on a device with a replaced battery, which is why we read capacity through OEM diagnostics at intake — the same per-grade floors listed above apply to iPhone and Samsung alike. Carrier lock is the other invisible discount: a locked iPhone is worth materially less in most EU resale markets. Check IMEI status for carrier lock and blacklist reporting before you price the unit, not after; all SmartChoice stock carries an IMEI-clean guarantee, cross-checked at intake.

Buying from any supplier

Verifying a Supplier's Grading Standard

Because no universal standard exists, the practical move is to pick one published standard as your reference point — this page, for instance — and map every other supplier onto it. Before scaling volume with anyone, ask for specifics rather than accepting grade labels at face value:

• Written, component-level criteria — do they publish separate grading for screen, frame, and back glass, not just a one-line description per grade?
• Unit-by-unit grading — is every device graded individually, or sampled from batches?
• Inspection conditions — under what lighting and at what distance is cosmetic inspection carried out?
• Battery methodology — is capacity read from OEM diagnostics or from the handset's own settings screen, which can misreport after a battery swap?
• Failure handling — is a unit that fails inspection downgraded transparently, or does it risk shipping at a grade it doesn't meet?

A supplier who answers all five with specifics is grading against a standard you can hold them to. Vague answers are worth testing with a small trial order before committing to volume.

Pricing

Pricing Benchmarks

The EUR ranges below are derived from actual current wholesale listings, not invented figures — but stock rotates fast (thousands of units per month), so treat them as indicative rather than a live price list. For exact current pricing by unit, see live stock.

Checklist

Arrival Inspection Checklist

Use this checklist when your shipment arrives. Complete all steps before accepting or storing the batch — under our return policy you have 7 business days from delivery to report discrepancies, with photographic evidence.

FAQ

Frequently Asked Questions

About

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