How mapping works
UGP maps to CTIA v5.1, R2 and marketplace condition names. A mapping says where a UGP grade lands, never that the systems are the same.
One direction: from UGP outwards
A crosswalk answers one question: a device has this UGP grade; where does it land in another system? It is read from the UGP record, which holds more than any single grade letter, so the mapping runs from UGP to the other system, not back.
The reverse is not safe. Another system's grade usually leaves out something every UGP grade guarantees, such as an unlocked device, a battery at 80% or more, or a wipe. A unit sold as CTIA B is not a UGP grade until it is graded to UGP.
Stricter and looser
Where UGP is stricter or looser than a mapped system, the table says so. The two cases that matter most:
- Cracks. No UGP grade is ever cracked. CTIA D includes a cracked display cover glass, so it maps to no UGP grade; UGP Acceptable maps to CTIA C "with no cracks".
- The display on Like New. UGP Like New allows up to two S1 marks on the display, where CTIA A allows none. A Like New unit can therefore map to CTIA B; Premium (A0, a flawless display) maps to CTIA A.
Exporting another system's grade
A party that exports a derived CTIA vector labels it derived from UGP v1.0. For phones, tablets and watches a record can also emit the CTIA functional class, derived from the recorded faults; every UGP grade is fully functional, so it derives class 1. §15 · §7.5
The full table
| UGP | Maps to |
|---|---|
| New Sealed | outside the cosmetic scale |
| New Open Box | Annex B "New" |
| Like NewPremium | A** |
| Very Good | B (L1–L2) |
| Good | B |
| Acceptable | C, with no cracks*** |
| no grade (REPAIR, PARTS) | D / E |
- ** UGP A allows up to two S1 marks on zone AA. CTIA A allows none, so a UGP A unit can map to CTIA B, and Premium (A0) maps to CTIA A.
- *** UGP D is never cracked. CTIA D includes a cracked display cover glass and maps to no UGP grade.
| UGP | CTIA v5.1 cosmetic | CTIA v5.1 primary* | CTIA v5.1 consumer tier | R2 REC | Back Market | Amazon Renewed | Swappa | eBay condition | Google Merchant |
|---|---|---|---|---|---|---|---|---|---|
| New Sealed | outside the cosmetic scale | — | — | unrestricted (unopened) | — | — | New | 1000 New | new |
| New Open Box | Annex B "New" | — | — | C9 (box) / C8 (no box) | — | — | Mint | 1500 New (other) | used |
| Like NewPremium | A** | A+ (AA when an RF-shielded test passes) | Tier 2 (Premium → Tier 1) | C6 / F5 | Excellent (Premium → Premium) | Excellent (Premium → Premium) | Mint | 3000 Used (2010 for approved refurbishers) | used |
| Very Good | B (L1–L2) | B+ | Tier 3 | C5 / F5 | Good | Good | Good | 3000 (2020) | used |
| Good | B | B+ | Tier 4 | C4 / F5 | Fair | Acceptable | Fair | 3000 (2030) | used |
| Acceptable | C, with no cracks*** | C+ | — (wholesale only) | C3 / F5 | — | — | — | 3000 | used |
| no grade (REPAIR, PARTS) | D / E | D, E | — | C1–C2 / F3–F4 | — | — | not allowed | 7000 For parts | — |
- * The primary grade assumes CTIA functional class 1, battery type 1 and customer and enterprise locks clear, all of which every UGP grade guarantees.
- ** UGP A allows up to two S1 marks on zone AA. CTIA A allows none, so a UGP A unit can map to CTIA B, and Premium (A0) maps to CTIA A.
- *** UGP D is never cracked. CTIA D includes a cracked display cover glass and maps to no UGP grade.
By system
- CTIA v5.1: cosmetic grade, primary grade and consumer tier.
- Marketplaces: Back Market, Amazon Renewed, Swappa, eBay and Google Merchant.
- R2v3: R2 equipment categories.
- Wholesale A–D sheets: how to read a supplier's letter grade against UGP.