Guidance on Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam According to QCVN 127:2021/BTTTT

5G Standalone (SA) mobile terminal equipment is hardware that connects directly to the 5G core network without depending on the 4G network. This equipment enables high-speed data transmission, low latency, and network slicing for specific applications. To ensure stable operation and prevent interference, Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam according to QCVN 127:2021/BTTTT is a mandatory requirement before products are launched on the market.

See more: Capacity Profile Of Phuc Gia Laboratory Corporation

Table of contents

I. Current Status of 5G Standalone Mobile Terminal Equipment Usage in Vietnam

Since October 2024, following the successful auction of key frequency bands (2600 MHz for Viettel, 3700 MHz for VNPT), mobile network operators in Vietnam have officially launched standalone 5G networks. Consequently, terminal equipment can connect directly to the 5G core network instead of relying on 4G, enhancing stability, reducing latency, and optimizing bandwidth.

Major smartphone manufacturers such as Apple, Samsung, and Xiaomi have provided software updates to unlock new 5G features for users in Vietnam. As a result, terminal equipment is not only serving personal data needs but is also prioritized for deployment in smart industrial zones and seaports—environments requiring fast data transmission, automation control, and ultra-low latency that 4G-dependent devices cannot support.

5G Standalone (SA) devices are more energy-efficient, support Network Slicing for emergency or enterprise applications, and operate stably on the newly licensed bands (n77, n78). Compliance with QCVN 127:2021/BTTTT ensures that devices meet standards for radio emissions and direct core network connectivity, contributing to service quality and spectrum safety. Therefore, Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam remains a critical step for all manufacturers.

Anh-San-Pham-Qcvn-127-Qcvn-129 — *5G Standalone Mobile Communication Terminal Equipment in Vietnam*

II. Guidance on Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam According to QCVN 127:2021/BTTTT

1. Scope of Application

QCVN 127:2021/BTTTT applies to 5G Standalone mobile communication terminal equipment operating on all or one of the frequency bands specified in Table 1 and complying with regulations on management and use of radio frequencies in Vietnam. Therefore, Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam must adhere to these specific spectral requirements.

Table 1 – Operating Bands

5G Frequency Band	Uplink (UL) Band: BS Receive / UE Transmit F_UL,l_ow – F_UL_,_h_i_gh (MHz)	Downlink (DL) Band: BS Transmit / UE Receive F_DL,low – F_DL,high (MHz)	Duplex Mode	Classification
n1	1 920 – 1 980	2 110 – 2 170	FDD	FR1
n3	1 710 – 1 785	1 805 – 1 880
n5	824 – 835	869 – 880
n8	880 – 915	925 – 960
n28	703 – 733	758 – 788
n40	2 300 – 2 400	2 300 – 2 400	TDD
n41	2 496 – 2 690	2 496 – 2690
n77	3 300 – 4 200	3 300 – 4 200
n78	3 300 – 3 800	3 300 – 3 800
n258	24 250 – 27 500	24 250 – 27 500	TDD	FR2

Note:

5G Standalone mobile phone equipment must ensure operation at a minimum in all bands n1, n3, n28, n41, n77, n78.
The n77 and n78 bands must be ready and only activated and used after these bands are planned in Vietnam.

Pursuant to Circular No. 29/2025/TT-BKHCN, products and goods that are 5G Standalone mobile communication terminal equipment with the HS codes below must meet the technical requirements in QCVN 127:2021/BTTTT:

Product Name	HS Code	Product Description
Fifth-generation (5G) mobile communication terminal equipment.	8517.13.00 8517.14.00	Terrestrial mobile phones using fifth-generation (5G) mobile communication technology.
	8517.62.59	Terrestrial mobile communication terminal equipment other than mobile phones (transmission equipment combined with receiving equipment), using fifth-generation (5G) mobile communication technology.

2. Technical Requirements

QCVN 127:2021/BTTTT specifies radio access technical requirements for 5G Standalone mobile communication terminal equipment operating on all or any of the frequency bands defined in this regulation and complying with radio frequency management and usage regulations in Vietnam. Accordingly, these devices must meet requirements for power (maximum – minimum), emissions, reference sensitivity, adjacent channel selectivity, blocking characteristics, spurious response, etc., for both transmitters and receivers.

(1) Requirements for UE operating on the FR1 frequency range

Transmitter requirements: Includes requirements for maximum output power, minimum output power, and output spectrum emissions (occupied bandwidth, out-of-band emissions, spurious emissions);
Receiver requirements: Includes requirements for reference sensitivity, adjacent channel selectivity, blocking characteristics (in-band and out-of-band), spurious response, intermodulation characteristics, and spurious emissions.

(2) Requirements for UE operating on the FR2 frequency range

Transmitter requirements: Includes requirements for maximum output power, minimum output power, and output spectrum emissions (occupied bandwidth, out-of-band emissions, spurious emissions);
Receiver requirements: Includes requirements for reference sensitivity, adjacent channel selectivity, blocking characteristics, spurious response, and spurious emissions.

3. Testing Cost and Time

The cost and duration for Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam according to QCVN 127:2021/BTTTT are publicly listed by Phuc Gia®. You can view the testing price list for electrical, electronic, telecommunications, and information technology equipment at Testing – Certification Quotation or contact Phuc Gia® for detailed consultation.

4. Where to conduct testing?

4.1. Regulations on qualified testing and certification units

Pursuant to Article 5 of Consolidated Document 02/2020/VBHN-BTTTT – Regulations on conformity certification and declaration for specialized information technology and communications products and goods, testing units serving certification and conformity declaration are regulated as follows:

Testing units serving conformity certification activities are designated or recognized testing units.

Testing units serving conformity declaration activities are designated or recognized units, or units that have registered testing activities under Decree No. 107/2016/ND-CP dated July 01, 2016, of the Government regarding business conditions for conformity assessment services.

Testing units are responsible to the Competent Authority for the accuracy of testing results. Testing results do not serve as a substitute for the Certificate of Conformity or the Declaration of Conformity.

4.2. Phuc Gia® – A Leading Reputable Laboratory for Telecommunications and ICT Equipment in Vietnam

Phúc Gia Laboratory Corporation (Phuc Gia®) has been designated by the Ministry of Science and Technology to perform testing for telecommunications and information technology equipment in accordance with 24 Vietnam Technical Regulations (QCVNs). This covers numerous critical equipment groups within the ICT sector, supporting the quality management of products and goods with potential safety risks under the Ministry’s jurisdiction, pursuant to Decision No. 2899/QD-BKHCN and Decision No. 228/QD-BTTTT.

Accordingly, Phuc Gia® is officially authorized to conduct Testing for 5G Standalone Mobile Communication Terminal Equipment in Vietnam per QCVN 127:2021/BTTTT.

Phuc Gia® also holds the distinction of being the first laboratory to be accredited to ISO/IEC 17025:2017 standards by all three major accreditation bodies (BoA, AOSC, and VACI). The testing facility spans up to 5,000 m² and is equipped with a comprehensive range of modern measurement and inspection systems. These facilities support testing for electrical safety, EMC, energy efficiency, RF, SAR, and various other technical parameters.

Complementing this infrastructure is a team of nearly 100 officers, engineers, and technical experts. Handpicked and intensively trained, they meet the most rigorous requirements for testing, certification, and conformity assessment across multiple technical disciplines.