Specification
3GPP TS 31.102: Characteristics of the Universal Subscriber Identity Module (USIM) application
At a glance
- Title
- Characteristics of the Universal Subscriber Identity Module (USIM) application
- Newest version
- V20.0.0 (Rel-20)
- Versions indexed
- 10
- Newest per release
- Rel-16: V16.17.0 (2026-10-01); Rel-17: V17.18.0 (2026-10-01); Rel-18: V18.11.0 (2026-10-01); Rel-19: V19.6.0 (2026-10-01); Rel-20: V20.0.0 (2026-10-01)
In plain words
TS 31.102 defines "the USIM application for 3GPP telecom network operation". This aims to ensure interoperability between a USIM and an ME regardless of manufacturer, card issuer or operator, and excludes administrative management of the USIM. V20.0.0 includes CRs on 2G/3G sunset and roaming UE handling, and adding parameters required to support slice-based N3IWF selection for 5G ProSe Layer-3 Remote UE.
Source: 3GPP TS 31.102 V20.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/31_series/31.102/31102-k00.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-20 | V20.0.0 | 2026-10-01 | TSG CT #113 |
| Rel-19 | V19.6.0 | 2026-10-01 | TSG CT #113 |
| Rel-18 | V18.11.0 | 2026-10-01 | TSG CT #113 |
| Rel-17 | V17.18.0 | 2026-10-01 | TSG CT #113 |
| Rel-16 | V16.17.0 | 2026-10-01 | TSG CT #113 |
| Rel-15 | V15.13.0 | 2026-06-29 | TSG CT #112 |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Change requests in V20.0.0
V20.0.0 of TS 31.102 includes 2 CRs.
| CR | Category | Subject | Source | Working group meeting | TSG TDoc |
|---|---|---|---|---|---|
| CR 1104 rev 2 | F | 2G/3G sunset and roaming UE handling | Verizon Cellco Partnership | CT6 #127 | CP-262114 |
| CR 1108 rev 2 | B | Adding parameters required to support slice-based N3IWF selection for 5G ProSe Layer-3 Remote UE | China Telecom | CT6 #127 | CP-262113 |
Source: 3GPP CR database.
Meetings behind the latest versions
Working group meetings that agreed the CRs in V20.0.0, V19.6.0, V18.11.0:
- CT6 #127: 4 CRs
Plenary meetings:
- TSG CT #113 approved V20.0.0 (Rel-20)
- TSG CT #113 approved V19.6.0 (Rel-19)
- TSG CT #112 approved V19.5.0 (Rel-19)
Source: 3GPP CR database and specification archive, as indexed by 3GPP Scout.
Clauses changed in V20.0.0
4 clauses changed or added in V20.0.0. Each clause number opens Scout on that clause.
| Clause | Title | Change | CRs |
|---|---|---|---|
| 4.2.94 | EF_{NASCONFIG} (Non Access Stratum Configuration) | changed | |
| D | Annex D (informative): Tags defined in 31.102 | changed | |
| 4.4.13.6 | EF_{5G_PROSE_RU} (5G ProSe configuration data for remote UE) | changed | |
| 4.4.13.12 | EF_{5G_PROSE_}M_{RU} (5G ProSe configuration data for multi-hop remote UE) | changed |
Source: 3GPP Scout comparison of this version with the one before it.
Sources
- 3GPP TS 31.102 V20.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/31_series/31.102/31102-k00.zip
- 3GPP CR database.
How this page was made
The facts box and the tables come straight from the 3GPP specification archive and CR database as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.