3GPP RF Conformance: TS 36.521, 38.521 and 38.533
The 3GPP UE conformance specifications are the test cases behind every cellular certification: TS 36.521 for LTE, TS 38.521 (five parts) for 5G NR, TS 38.533 for NR radio resource management, and TS 51.010-1 for GSM. PTCRB and GCF select test cases from them; they do not rewrite them. This page maps who tests what, which clause holds which test, which versions were current on 7 October 2026, what the specifications say about conducted versus radiated testing, and where they stop and the RED harmonised standards take over.
The specification map
Section titled “The specification map”All of the specifications below belong to working group RAN5 of 3GPP TSG RAN. Titles are those of the specifications; "latest version" is the highest version listed on the 3GPP portal on 7 October 2026.
| Specification | Title (short) | First Release | Latest version listed |
|---|---|---|---|
| 3GPP TS 36.521-1 | E-UTRA, radio transmission and reception, Part 1: Conformance testing | Rel-8 | V19.3.0 |
| TS 36.521-2 | E-UTRA, Part 2: Implementation Conformance Statement (ICS) | Rel-8 | V19.3.0 |
| TS 36.521-3 | E-UTRA, Part 3: RRM conformance testing | Rel-8 | V19.3.0 |
| 3GPP TS 38.521-1 | NR, Part 1: Range 1 standalone | Rel-15 | V20.0.0 |
| 3GPP TS 38.521-2 | NR, Part 2: Range 2 standalone | Rel-15 | V19.4.0 |
| TS 38.521-3 | NR, Part 3: Range 1 and Range 2 interworking operation with other radios | Rel-15 | V20.0.0 |
| TS 38.521-4 | NR, Part 4: Performance | Rel-15 | V19.2.0 |
| TS 38.521-5 | NR, Part 5: Satellite access RF and performance | Rel-17 | V19.3.0 |
| TS 38.533 | NR, Radio Resource Management (RRM) | Rel-15 | V19.4.0 |
| TS 36.508 / TS 38.508-1 | Common test environment(s) for UE conformance testing | Rel-8 / Rel-15 | V19.3.0 / V20.0.0 |
| TS 38.508-2 | 5GS, common ICS proforma | Rel-15 | V20.0.0 |
| TS 36.523-1 / TS 38.523-1 | Protocol conformance specification | Rel-8 / Rel-15 | V19.4.0 / V19.6.0 |
| TS 51.010-1 | Mobile Station (MS) conformance specification (GSM) | Rel-4 | V13.15.0 |
Three consequences that the old reading of this family gets wrong:
- The LTE and NR families are not split the same way. In LTE, Part 2 is the ICS and Part 3 is RRM. In NR, Part 2 is FR2, Part 3 is interworking, the ICS proforma is TS 38.508-2, and RRM is a separate specification, TS 38.533.
- NR demodulation performance lives in TS 38.521-4. In LTE it stays inside TS 36.521-1 (clause 8 "Performance requirement" and clause 9 "Reporting of channel state information").
- The documents are huge. The table of contents of TS 38.521-1 V19.5.1 runs past page 2,900, and that of TS 36.521-1 V19.2.0 past page 6,800. The split into parts did not keep them short.
GSM conformance is still maintained: TS 51.010-1 V13.15.0 was uploaded on 23 June 2026, in Release 13.
What TS 38.521-1 and TS 36.521-1 actually test
Section titled “What TS 38.521-1 and TS 36.521-1 actually test”The RF parts follow the same layout: clause 5 for operating bands and channel arrangement, clause 6 for the transmitter, clause 7 for the receiver. The clause numbers below are taken from TS 38.521-1 V19.5.1 and TS 36.521-1 V19.2.0.
| Test | TS 38.521-1 (NR FR1) | TS 36.521-1 (LTE) |
|---|---|---|
| UE maximum output power | 6.2.1 | 6.2.2 |
| Maximum power reduction (MPR) | 6.2.2 | 6.2.3 |
| Additional MPR (A-MPR) | 6.2.3 | 6.2.4 |
| Configured transmitted power | 6.2.4 | 6.2.5 |
| Minimum output power | 6.3.1 | 6.3.2 |
| Transmit OFF power | 6.3.2 | 6.3.3 |
| ON/OFF time mask | 6.3.3 | 6.3.4 |
| Power control | 6.3.4 | 6.3.5 |
| Frequency error | 6.4.1 | 6.5.1 |
| Transmit modulation quality (EVM and related) | 6.4.2 | 6.5.2 |
| Occupied bandwidth | 6.5.1 | 6.6.1 |
| Out of band emission (spectrum emission mask, ACLR) | 6.5.2 | 6.6.2 |
| Transmitter spurious emissions | 6.5.3 | 6.6.3 |
| Transmit intermodulation | 6.5.4 | 6.7 |
| Diversity characteristics | 7.2 | 7.2 |
| Reference sensitivity (REFSENS) | 7.3 | 7.3 |
| Maximum input level | 7.4 | 7.4 |
| Adjacent channel selectivity (ACS) | 7.5 | 7.5 |
| Blocking characteristics | 7.6 | 7.6 |
| Spurious response | 7.7 | 7.7 |
| Intermodulation characteristics | 7.8 | 7.8 |
| Receiver spurious emissions | 7.9 | 7.9 |
Two points are often misquoted:
- Power control is a TX test in TS xx.521-1, not an RRM test.
- The receiver pass criterion is a throughput, not a BLER figure. For reference sensitivity, both specifications require the throughput to be at least 95 % of the maximum throughput of the reference measurement channel, at the specified reference power level.
TS 38.521-2 keeps the same clause numbers for FR2 but replaces several tests: clause 6.6 is beam correspondence, clause 7.3 adds EIS spherical coverage, and clauses 7.7 (spurious response) and 7.8 (intermodulation) are void.
Conducted in FR1, over the air in FR2
Section titled “Conducted in FR1, over the air in FR2”The frequency ranges are defined in clause 5.1 of TS 38.521-1: FR1 is 410 MHz to 7125 MHz, FR2-1 is 24250 MHz to 52600 MHz and FR2-2 is 52600 MHz to 71000 MHz. FR1 is therefore not "sub-6 GHz": it extends to 7.125 GHz.
FR1 and LTE: conducted. TS 38.521-1 clause 6.1 states that, unless otherwise stated, transmitter characteristics are specified at the antenna connector of the UE, and that for a UE with an integral antenna only, a reference antenna with a gain of 0 dBi is assumed. TS 36.521-1 clause 7 says the same for the LTE receiver. The test procedures read "Connect the SS to the UE antenna connectors", with the connection diagrams in Annex A of TS 38.508-1. TS 38.521-1 does not measure the radiated performance of the finished device (total radiated power, total radiated sensitivity).
FR2: over the air. TS 38.521-2 clause 6.1 states that transmitter characteristics are specified over the air (OTA). The test quantities become EIRP, TRP and EIS, with beam peak directions and spherical coverage. The FR2 bands in TS 38.521-2 V19.4.0 (table 5.2-1) are n257, n258, n259, n260 and n261, all TDD.
| Range | Frequencies (TS 38.521-1 table 5.1-1) | Conformance specification | Coupling |
|---|---|---|---|
| FR1 | 410 to 7125 MHz | TS 38.521-1 | Antenna connector, 0 dBi reference antenna assumed for integral antennas |
| FR2-1 | 24250 to 52600 MHz | TS 38.521-2 | OTA |
| FR2-2 | 52600 to 71000 MHz | TS 38.521-2 | OTA |
| LTE | E-UTRA bands of TS 36.521-1 clause 5 | TS 36.521-1 | Antenna connector |
RRM: TS 36.521-3 for LTE, TS 38.533 for NR
Section titled “RRM: TS 36.521-3 for LTE, TS 38.533 for NR”RRM tests check what the UE does as the radio environment changes: cell selection and reselection, handover, RRC connection control, timing, measurement accuracy. They are protocol behaviour with timing requirements, not raw RF quantities.
| TS 36.521-3 V19.2.0 (LTE) | TS 38.533 V19.4.0 (NR) |
|---|---|
| 4 RRC_IDLE state mobility | 4 EN-DC with all NR cells in FR1 |
| 5 RRC_CONNECTED state mobility | 4A NE-DC with all NR cells in FR1 |
| 6 RRC connection mobility control | 5 EN-DC with at least one NR cell in FR2 |
| 7 Timing and signalling characteristics | 6 NR standalone in FR1 |
| 8 UE measurements procedures | 7 NR standalone with at least one NR cell in FR2 |
| 9 Measurement performance requirements | 9 NR direct UE-to-UE link |
| 10 to 12 ProSe and V2X | 10 to 13 tests with cells under CCA (shared spectrum) |
| 13 UE category NB for satellite access | 14 and 20 satellite access, 16 to 18 RedCap, 19 air-to-ground |
Applicability: the ICS decides which cases run
Section titled “Applicability: the ICS decides which cases run”TS 38.521-1 clause 1 states that "tests are only applicable to those mobiles that are intended to support the appropriate functionality", and each test case has a "definition and applicability" part. The manufacturer declares supported bands, band combinations, power classes and features in the ICS: TS 36.521-2 for LTE RF, TS 38.508-2 for 5GS. The declaration then selects the test cases.
- Carrier aggregation. LTE CA is in TS 36.521-1 (the "A" suffix clauses, such as 6.2A). NR CA within FR1 is in TS 38.521-1. CA between FR1 and FR2 is in TS 38.521-3.
- EN-DC, NE-DC, NGEN-DC. The RF requirements are in TS 38.521-3, whose scope says so explicitly. EN-DC RRM is in TS 38.533 clauses 4 and 5.
- Satellite access (NTN). NR satellite RF and performance tests are in TS 38.521-5, added in Release 17.
Every declared band and combination opens test cases, so the declaration drives the size and cost of the campaign. Over-declaring adds tests; under-declaring leaves a supported configuration untested.
The execution layer: TS xx.508 and TS xx.523
Section titled “The execution layer: TS xx.508 and TS xx.523”TS 36.508 and TS 38.508-1 are titled "Common test environment(s) for UE conformance testing". They hold reference test conditions, generic procedures to bring the UE into a known state, default message contents and the test equipment connection diagrams that the RF procedures cite. The test equipment is a system simulator (SS) that emulates the network, which is why a spectrum analyser alone cannot run a TS xx.521-1 test case.
TS 36.523-1 and TS 38.523-1 are the protocol conformance specifications (signalling: RRC, NAS). Part 2 is the ICS proforma (LTE) or the applicability of protocol test cases (5GS), and Part 3 holds the test suites. They are a separate test domain, not a format layer for TS xx.521.
Releases and versions
Section titled “Releases and versions”The Release in a version number is the first digit field: V19.x.y is Release 19, V20.x.y is Release 20. The conformance specifications carry new functionality forward in later Releases, so a Release 15 UE is tested against current versions with the applicability rules of each test case.
| Release | What 3GPP records | Impact on conformance |
|---|---|---|
| Rel-15 | First full set of 5G standards: NSA NR specifications delivered late 2017, standalone added in 2018 | Creation of TS 38.521-1 to -4 and TS 38.533 |
| Rel-16 | Stage 3 and ASN.1 freezes approved at TSG#88e, ending 3 July 2020 | Release 16 features are tested through later versions of the same specifications |
| Rel-17 | Functional freeze at TSG#95-e, March 2022: RedCap, NR extended to 71 GHz, NR and IoT over NTN | TS 38.521-5 created; FR2-2 (52.6 to 71 GHz); RedCap clauses in TS 38.533 |
| Rel-18 | First 5G-Advanced Release | New features carried into V18 and V19 versions |
| Rel-19 | Second 5G-Advanced Release, implementable specifications end of December 2025 | Most conformance specifications at V19 in 2026 |
| Rel-20 | 5G-Advanced remains the focus of Rel-20 work during 2026 | TS 38.521-1, TS 38.521-3 and TS 38.508-1 already listed at V20.0.0 |
RAN5 updates the conformance specifications after each quarterly plenary. The 3GPP archive shows the 2026 rhythm for TS 38.521-1:
| Version | Uploaded to the 3GPP archive |
|---|---|
| V19.3.0 | 20 January 2026 |
| V19.4.0 | 10 April 2026 |
| V19.5.0 | 15 July 2026 |
| V19.5.1 | 16 July 2026 |
| V20.0.0 | listed on the 3GPP portal on 7 October 2026 |
A report that says "compliant with TS 38.521-1" without the version and the list of executed test cases is not traceable.
Where PTCRB and GCF sit
Section titled “Where PTCRB and GCF sit”| Layer | What it publishes | Who maintains it |
|---|---|---|
| 3GPP | The test cases (TS 36.521, TS 38.521, TS 38.533, TS xx.523, TS 51.010-1) | TSG RAN WG5 |
| PTCRB | PPMD (process), NAPRD03 (technical requirements), PVG.11 (frequency bands for testing) | PTCRB Plenary and PTCRB Validation Group (PVG), run by CTIA Certification |
| GCF | Conformance certification criteria; tests validated and run on commercial system simulators | Conformance Agreement Group (CAG), under the GCF Steering Group |
| Carrier acceptance | Operator-specific requirements on top of PTCRB or GCF | Each operator |
PTCRB states that certification fees range from 1,500 to 15,000 US dollars, defined in the PPMD, and that lab testing fees are set by each lab. IoT devices built on a PTCRB-certified module go through the IoT Network Certified programme. See PTCRB, PTCRB test plans, PTCRB tests, the GCF guide and PTCRB vs GCF.
Carrier programmes (AT&T NAFI, Verizon Open Development, Deutsche Telekom IoT, NTT Docomo, China Mobile / Telecom / Unicom) add their own requirements on top.
Where 3GPP stops: RED harmonised standards
Section titled “Where 3GPP stops: RED harmonised standards”3GPP conformance is an industry certification baseline, not a regulatory one. For CE marking under the Radio Equipment Directive, the presumption of conformity for Article 3(2) comes from ETSI harmonised standards cited in the Official Journal:
| Standard | Scope | Status (Implementing Decision (EU) 2025/893) |
|---|---|---|
| EN 301 908-1 | IMT cellular networks, common part | Used with the technology-specific part |
| EN 301 908-13 V13.3.1 | E-UTRA (LTE) user equipment | Cited with a restriction: no presumption for total radiated sensitivity or total radiated power for devices narrower than 56 mm or wider than 72 mm |
| EN 301 908-13 V13.2.1 | E-UTRA (LTE) user equipment | Withdrawal deferred: loses its citation on 15 November 2026 |
| EN 301 908-25 V15.1.1 | NR user equipment | Cited by Decision 2025/893 |
| EN 301 511 | GSM mobile stations | Separate harmonised standard for GSM |
The radio cybersecurity requirements of RED Article 3(3)(d)(e)(f) apply from 1 August 2025, with EN 18031-1/-2/-3 cited with restrictions by Decision (EU) 2025/138. See RED harmonised standards.
Claims the texts contradict
Section titled “Claims the texts contradict”| Claim | What the texts say |
|---|---|
| "TS 38.521-3 is NR RRM" | TS 38.521-3 is RF for FR1 plus FR2 CA and EN-DC, NE-DC, NGEN-DC. NR RRM is TS 38.533. |
| "EN-DC test cases are in TS 36.521-1 and TS 38.521-1" | The EN-DC RF requirements are in TS 38.521-3 (scope, clause 1); EN-DC RRM is in TS 38.533. |
| "TS 36.521-2 contains the conditional CA, MIMO and demodulation tests" | TS 36.521-2 is the ICS. The tests are in TS 36.521-1, including demodulation (clause 8). |
| "TS xx.508 defines the application format of test cases" | TS 36.508 and TS 38.508-1 are the common test environment for UE conformance testing. |
| "TS 38.521-1 is tested OTA in integrated designs" | Requirements are at the antenna connector; a 0 dBi reference antenna is assumed for integral antennas. |
| "Receiver tests use a 5 % or 10 % BLER target" | REFSENS requires throughput of at least 95 % of the maximum throughput of the reference measurement channel. |
| "Power control is an RRM test" | Power control is clause 6.3.4 of TS 38.521-1 and 6.3.5 of TS 36.521-1 (transmitter). |
| "FR1 is sub-6 GHz" | FR1 is 410 MHz to 7125 MHz. |
| "FR2 bands are n257, n258, n260, n261, n262" | TS 38.521-2 V19.4.0 lists n257, n258, n259, n260 and n261. |
| "The parts split avoids documents of several thousand pages" | TS 38.521-1 passes 2,900 pages and TS 36.521-1 passes 6,800. |
| "Release 16 introduced NR-Light" | Reduced capability (RedCap) NR devices are a Release 17 project. |
| "GCF governance is the Certification Agreement Group" | GCF calls it the Conformance Agreement Group (CAG). |
| "TS 51.010 for GSM is withdrawn" | TS 51.010-1 V13.15.0 was uploaded on 23 June 2026. |
| "Passing TS 38.521-1 gives CE presumption" | Presumption under RED comes from EN 301 908-1 with -13 or -25, cited in the OJ. |
Common pitfalls
Section titled “Common pitfalls”Spec without version. The file mentions "TS 38.521-1" without version number. Cite the version and the executed test case list.
Wrong RRM specification. A 5G test plan that cites TS 38.521-3 for RRM misses TS 38.533 entirely.
Capability under-declaration. A band combination supported by the module but not declared in the ICS is never tested, while the product can still use it in the field.
FR1 versus FR2 confusion. A module derived from a chipset with FR2 support needs TS 38.521-2 if FR2 is enabled; TS 38.521-1 covers none of it.
Bench without a system simulator. A spectrum analyser can measure emissions on a free-running transmitter, but the TS xx.521-1 procedures start with the SS bringing the UE into a defined connected state. Such pre-tests are useful during design but are not conformance results.
REFSENS and ACLR without margin. The limits apply to every unit. A design that meets them only on a golden sample leaves no room for production spread, temperature or a power amplifier pushed into compression.
Reading LTE conducted results as radiated performance. TS 36.521-1 and TS 38.521-1 assume a 0 dBi antenna. Radiated performance of the finished device is assessed elsewhere, for instance under the TRS and TRP parameters of EN 301 908-13.
See also
Section titled “See also”- PTCRB: PTCRB scope, PTCRB tests, PTCRB pitfalls.
- GCF: GCF guide, PTCRB vs GCF.
- Carrier acceptance: AT&T NAFI, Verizon Open Development, Deutsche Telekom IoT, China Mobile / Telecom / Unicom.
- Europe: RED harmonised standards.
For vocabulary (UE, RRC, NAS, RRM, EVM, ACLR, REFSENS, CA, EN-DC, FR1, FR2, NSA, SA), see the spilma glossary.
Sources & references
- 3GPP TS 36.521-1, E-UTRA UE conformance specification, radio transmission and reception, Part 1: Conformance testing, 3GPP www.3gpp.org/dynareport/36521-1.htm
- 3GPP TS 36.521-3, E-UTRA UE conformance specification, Part 3: RRM conformance testing, 3GPP www.3gpp.org/dynareport/36521-3.htm
- 3GPP TS 38.521-1, NR UE conformance specification, Part 1: Range 1 standalone, 3GPP www.3gpp.org/dynareport/38521-1.htm
- 3GPP TS 38.521-2, NR UE conformance specification, Part 2: Range 2 standalone, 3GPP www.3gpp.org/dynareport/38521-2.htm
- 3GPP TS 38.521-3, NR UE conformance specification, Part 3: Range 1 and Range 2 interworking operation with other radios, 3GPP www.3gpp.org/dynareport/38521-3.htm
- 3GPP TS 38.521-5, NR UE conformance specification, Part 5: Satellite access RF and performance, 3GPP www.3gpp.org/dynareport/38521-5.htm
- 3GPP TS 38.533, NR UE conformance specification, Radio Resource Management (RRM), 3GPP www.3gpp.org/dynareport/38533.htm
- 3GPP TS 38.508-1, 5GS UE conformance specification, Part 1: Common test environment, 3GPP www.3gpp.org/dynareport/38508-1.htm
- 3GPP TS 51.010-1, Mobile Station (MS) conformance specification, Part 1, 3GPP www.3gpp.org/dynareport/51010-1.htm
- 3GPP specification archive, TS 38.521-1 versions and upload dates, 3GPP www.3gpp.org/ftp/Specs/archive/38_series/38.521-1/
- 3GPP Specifications by series, 3GPP www.3gpp.org/specifications-technologies/specifications-by-series
- 3GPP Release 17, 3GPP www.3gpp.org/specifications-technologies/releases/release-17
- 3GPP Release 19, 3GPP www.3gpp.org/specifications-technologies/releases/release-19
- PTCRB, Get Certified (PPMD, NAPRD03, PVG.11), CTIA Certification www.ptcrb.com/get-certified/
- PTCRB Working Groups, CTIA Certification www.ptcrb.com/about/working-groups/
- PTCRB Certification Program, PTCRB www.ptcrb.com/
- GCF, Organisation (Steering Group, CAG, FTAG, IAG, PAG), GCF www.globalcertificationforum.org/about/organisation.html
- GCF, Global Certification Forum, GCF www.globalcertificationforum.org/
- Commission Implementing Decision (EU) 2025/893, harmonised standards for radio equipment, European Union eur-lex.europa.eu/eli/dec_impl/2025/893/oj
Frequently asked questions
- What is the difference between TS 36.521 and TS 38.521?
- Both are 3GPP UE (User Equipment, the cellular terminal) conformance specifications for radio transmission and reception, maintained by working group RAN5. TS 36.521 covers E-UTRA (LTE) and dates from Release 8: Part 1 holds the RF tests, Part 2 the ICS (Implementation Conformance Statement) and Part 3 the RRM (Radio Resource Management) tests. TS 38.521 covers 5G NR and dates from Release 15: Part 1 is frequency range 1 standalone, Part 2 frequency range 2 standalone, Part 3 interworking (FR1 plus FR2 carrier aggregation, EN-DC, NE-DC, NGEN-DC), Part 4 performance and Part 5 satellite access.
- Where are the NR RRM tests, if not in TS 38.521-3?
- In TS 38.533, "NR; User Equipment (UE) conformance specification; Radio Resource Management (RRM)". TS 38.521-3 is an RF specification for interworking with other radios, not an RRM specification. Only LTE keeps RRM inside the 36.521 family, as TS 36.521-3. TS 38.533 V19.4.0 (September 2026) is organised by deployment: EN-DC with NR in FR1, EN-DC with NR in FR2, NR standalone in FR1 and FR2, cells under CCA (shared spectrum), satellite access, RedCap and air-to-ground.
- How do TS xx.508 and TS xx.523 fit in?
- TS 36.508 and TS 38.508-1 define the common test environment: reference test conditions, generic procedures, default message contents and, in Annex A, the connection diagrams between the system simulator (SS) and the UE that every RF test procedure points to. TS 38.508-2 is the common ICS proforma for 5GS. TS 36.523-1 and TS 38.523-1 are the protocol (signalling) conformance specifications, with the executable test suites in Part 3. They are not an "application format" for RF test cases.
- Why do PTCRB and GCF both rely on the same 3GPP specifications?
- Neither scheme writes RF test cases. PTCRB, run by CTIA Certification, lists its technical requirements in NAPRD03, its frequency bands for testing in PVG.11, and its process in the PTCRB Program Management Document; its Validation Group validates test cases. In GCF, the Conformance Agreement Group (CAG) maintains the conformance criteria, and those tests are validated and run on commercial system simulators. Both point to the 3GPP test cases, then differ on band lists, recognised labs, fees and process.
- Are TS 38.521-1 tests radiated or conducted?
- Conducted. TS 38.521-1 states that, unless otherwise stated, transmitter characteristics are specified at the antenna connector of the UE, and that for a UE with an integral antenna only, a reference antenna with a gain of 0 dBi is assumed. TS 36.521-1 uses the same rule. TS 38.521-2 (FR2) is the opposite: transmitter characteristics are specified over the air (OTA), with EIRP, TRP and EIS spherical coverage as test quantities.
- Should the 3GPP version be cited in a conformance file?
- Yes. RAN5 publishes new versions of each conformance specification after its quarterly plenary meetings: in 2026, TS 38.521-1 went through V19.3.0 (January), V19.4.0 (April), V19.5.0 and V19.5.1 (July), and the 3GPP portal now lists V20.0.0. A test case can be added, corrected or withdrawn between versions, so a report that cites "TS 38.521-1" without a version number is not traceable. PTCRB and GCF state which test cases and versions apply to a certification.
- Where are the EN-DC RF tests?
- In TS 38.521-3. Its scope covers carrier aggregation between Range 1 and Range 2 and the additional requirements for EN-DC (E-UTRA NR Dual Connectivity), NE-DC and NGEN-DC. NR carrier aggregation within FR1 stays in TS 38.521-1, and LTE carrier aggregation in TS 36.521-1. Which combinations are tested depends on what the UE declares in its ICS.
- Does passing TS 36.521-1 or TS 38.521-1 give CE presumption of conformity?
- No. 3GPP specifications are not harmonised standards under the Radio Equipment Directive. For RED Article 3(2), cellular terminals use ETSI EN 301 908-1 (common part) with EN 301 908-13 for LTE user equipment and EN 301 908-25 V15.1.1 for NR user equipment, both cited by Implementing Decision (EU) 2025/893. EN 301 908-13 V13.3.1 is cited with a restriction on total radiated sensitivity and power for devices narrower than 56 mm or wider than 72 mm, and V13.2.1 loses its citation on 15 November 2026.