2AUCY-V2556Mobile Phone

vivo Mobile Communication Co., Ltd. The physical U.S. address and email and FRN for the designated agent are: Physical U.S. address: 5890 Pacific Center Blvd., San Diego, California 92121 FRN：0033411711 Email: [email protected] The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The agent accepts the designation by vivo Mobile Communication Co., Ltd. as the U.S. agent to accept service of process includes, but is not limited to, delivery of any correspondence, notices, orders, decisions, and requirements of administrative, legal, or judicial process related to Commission proceedings. Signed by the Applicant Signed by the Agent (if different from the Applicant) Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing Grantee Code: 2AUCY Applicant FRN:0028746295 vivo Mobile Communication Co., Ltd., certifies that, as of the date of the filing of application, SMART LUCKY TECHNOLOGY, INC. is designated as the U.S. agent for the purpose of accepting service of process on behalf of the applicant. Name: Jianfeng Xiang Title: Certification Engineer Email: [email protected] Date: 2025/05/12 Name: Lei Xu Title: Secretary Email: [email protected] Date: 2025/05/12

vivo Mobile Communication Co., Ltd. Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Date: January 5, 2026 Subject: Certifications concerning “covered” equipment pursuant to Part 2.911(d)(5)(i) and (ii) FCC ID: 2AUCY-V2556 To whom it may concern, vivo Mobile Communication Co., Ltd. certifies that the equipment for which authorization is sought is not the equipment on the Covered List, as established pursuant to § 1.50002 of CFR Title 47, that is prohibited from obtaining an equipment authorization under this subpart. This includes equipment that: (1) Has been certified as a modular transmitter; or (2) Meets the modular transmitter requirements of § 15.212 of this chapter and could be certified as a modular transmitter. pursuant to section 2.903 resulting the recent adoption of FCC 25-71 (et al., ET Docket No. 21-232, Second Report and Order); or (3) Uncrewed aircraft systems (UAS) and UAS critical components produced in a foreign country and all communications and video surveillance equipment and services listed in Section 1709(a)(1) of the FY25 National Defense Authorization Act (Pub. L. 118-159) vivo Mobile Communication Co., Ltd. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. vivo Mobile Communication Co., Ltd. certifies that, as of the date of the filing of the application, the applicant [is not] identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. vivo Mobile Communication Co., Ltd. further certifies that no Cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software is installed in the equipment being certified. The above-referenced Covered List is published by the Public Safety and Homeland Security Bureau (PSHSB), pursuant to Section 1.50002 of the Commission’s rules. Sincerely, vivo Mobile Communication Co., Ltd. ________________________ Name: Jianfeng Xiang E-mail: [email protected]

1/1 vivo Mobile Communication Co., Ltd. Date: January 5, 2026 Federal Communications Commission Authorization and Evaluation Division RE : Certification Application FCC ID : 2AUCY-V2556 To Whom It May Concern, Pursuant to sections 0.457 and 0.459 of CFR 47, Public Notice DA 04-1705 of the Commission’s policy and to avoid premature release of sensitive information prior to marketing or release of the product to the public, the applicant requests the following documents contained in this certification application be temporarily withheld from public disclosure for an initial period of 180 days:  External Photos  Internal Photos  Test set-up photos  Users Manual The application contains technical information, which vivo Mobile Communication Co., Ltd. deems to be trade secrets and proprietary. If made public, the information might be used to the disadvantage of the applicant in the market place. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application Sincerely, ____ Contact Person: Jianfeng Xiang E-mail: [email protected]

vivo Mobile Communication Co., Ltd. Date: January 5, 2026 Power of Attorney To whom it may concern, Please be notified that I, Jianfeng Xiang, have designated Jim Tsai in Sporton International Inc. as the person being responsible for this project and to sign the form 731 and other documentation. Any and all acts carried out by Jim Tsai in Sporton International Inc., on the matters of relating to all processes required in the FCC approval and any communication needed with the national authority, shall have the same legal authority as acts on our own behalf. We further certifies that neither the applicant nor any party to this application, as defined in 47 CFR Ch. 1.2002 (b), is subject to a denial to Federal benefits, that include FCC benefits, pursuant to section 5301 of the Anti-Drug Abuse Act of 1998, 21 U.S.C 862. This authorization is limited to the product of as following: FCC ID: 2AUCY-V2556 If you have any acknowledgement and response, please send it to Sporton International Inc. directly. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely yours, ____ Contact Person: Jianfeng Xiang E-mail: [email protected]

Rev. 1/1/03 vivo Mobile Communication Co., Ltd. Date: January 5, 2026 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AUCY-V2556 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Schematics Block Diagram Parts List Operation Description Tune up Procedure The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, ________________________ Contact Person: Jianfeng Xiang E-mail: [email protected]

MODEL: V2556 IMEI1: XXXXXXXXXXXXX IMEI2: XXXXXXXXXXXXX SN: XXXXXXXXXXXXXXX 4GB+128GB Mobile Phone Hecho en China FCC ID: 2AUCY-V2556

Back of EUT Brand name:vivo Model name: label Label located on the back cover of the device and permanently

FCC E-Label Information A. Images of the e-label screen are provided below: B. Access to the required information on the e-label Users are able to access the information in no more than three steps in a device’s menu. The actual steps are: Settings >About phone> Status info No any special accessories, access codes, or SIM card are required to go through the above steps. C. Devices have physical labels at point of marketing/sale visible to the purchaser (or in the alternative, on the packaging), and at time of importation? At the time of importation, marketing, and sale, the device will have the required physical label on the packaging, which will include the device’s FCC ID. D. Electronic labeling information is programmed into the device by the manufacturer at the time of manufacture. Yes. E. Electronic labeling information not modifiable by any third party. The e-label of the device is programmed by the grantee and secured in such a manner that it cannot be modified by third parties. F. All the applicable regulatory information required on the packaging or user instructions is provided according to the rules. Applicable regulatory information not found in the e-label is contained in the user manual.

Sporton International Inc. (ShenZhen) Page Number : 1 of 22 TEL : +86-755-8637-9589 Report Issued Date : Jan. 07, 2026 FAX : +86-755-8637-9595 Report Version : Rev. 01 FCC ID : 2AUCY-V2556 Report Template No.: BU5-FC15B Version 3.0 FCC Test Report Report No. : FC5N1423 FCC Test Report APPLICANT : vivo Mobile Communication Co., Ltd. EQUIPMENT : Mobile Phone BRAND NAME : vivo MODEL NAME : V2556 FCC ID : 2AUCY-V2556 STANDARD : 47 CFR Part 15 Subpart B CLASSIFICATION : Certification TEST DATE(S) : Dec. 20, 2025 ~ Dec. 22, 2025 We, Sporton International Inc. (Shenzhen), would like to declare that the tested sample has been evaluated in accordance with the test procedures given in ANSI C63.4-2014 and has been in compliance with the applicable technical standards. The test results in this report apply exclusively to the tested model / sample. Without written approval of Sporton International Inc. (Shenzhen), the test report shall not be reproduced except in full. Approved by: Fly Liang Sporton International Inc. (ShenZhen) 1/F, 2/F, Bldg 5, Shiling Industrial Zone, Xinwei Village, Xili, Nanshan, Shenzhen, 518055 People’s Republic of China Sporton International Inc. (ShenZhen) Page Number : 2 of 22 TEL : +86-755-8637-9589 Report Issued Date : Jan. 07, 2026 FAX : +86-755-8637-9595 Report Version : Rev. 01 FCC ID : 2AUCY-V2556 Report Template No.: BU5-FC15B Version 3.0 FCC Test Report Report No. : FC5N1423 TABLE OF CONTENTS REVISION HISTORY .......................................................................................................................................... 3 SUMMARY OF TEST RESULT ......................................................................................................................... 4 1. GENERAL DESCRIPTION .......................................................................................................................... 5 1.1. Applicant ............................................................................................................................................ 5 1.2. Manufacturer ..................................................................................................................................... 5 1.3. Product Feature of Equipment Under Test ....................................................................................... 5 1.4. Product Specification of Equipment Under Test ............................................................................... 6 1.5. Modification of EUT ........................................................................................................................... 7 1.6. Test Location ..................................................................................................................................... 7 1.7. Test Software .................................................................................................................................... 7 1.8. Applicable Standards ........................................................................................................................ 8 2. TEST CONFIGURATION OF EQUIPMENT UNDER TEST ........................................................................ 9 2.1. Test Mode ......................................................................................................................................... 9 2.2. Connection Diagram of Test System .............................................................................................. 10 2.3. Support Unit used in test configuration and system ........................................................................ 10 2.4. EUT Operation Test Setup .............................................................................................................. 11 3. TEST RESULT ........................................................................................................................................... 12 3.1. Test of AC Conducted Emission Measurement .............................................................................. 12 3.2. Test of Radiated Emission Measurement ....................................................................................... 16 4. LIST OF MEASURING EQUIPMENT ........................................................................................................ 21 5. MEASUREMENT UNCERTAINTY ............................................................................................................ 22 APPENDIX A. SETUP PHOTOGRAPHS Sporton International Inc. (ShenZhen) Page Number : 3 of 22 TEL : +86-755-8637-9589 Report Issued Date : Jan. 07, 2026 FAX : +86-755-8637-9595 Report Version : Rev. 01 FCC ID : 2AUCY-V2556 Report Template No.: BU5-FC15B Version 3.0 FCC Test Report Report No. : FC5N1423 REVISION HISTORY REPORT NO. VERSION DESCRIPTION ISSUED DATE FC5N1423 Rev. 01 Initial issue of report Jan. 07, 2026 Sporton International Inc. (ShenZhen) Page Number : 4 of 22 TEL : +86-755-8637-9589 Report Issued Date : Jan. 07, 2026 FAX : +86-755-8637-9595 Report Version : Rev. 01 FCC ID : 2AUCY-V2556 Report Template No.: BU5-FC15B Version 3.0 FCC Test Report Report No. : FC5N1423 SUMMARY OF TEST RESULT Report Section FCC Rule Description Limit Result Remark 3.1 15.107 AC Conducted Emission < 15.107 limits PASS Under limit 11.39 dB at 0.16 MHz 3.2 15.109 Radiated Emission < 15.109 limits PASS Under limit 7.85 dB at 60.07 MHz Conformity Assessment Condition: The test results (PASS/FAIL) with all measurement uncertainty excluded are presented against the regulation limits or in accordance with the requirements stipulated by the applicant/manufacturer who shall bear all the risks of non-compliance that may potentially occur if measurement uncertainty is taken into account. Please refer to each test results in the section “Measurement Uncertainty”. Disclaimer: The product specifications of the EUT presented in the test report that may affect the test assessments are declared by the manufacturer who shall take full r…

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Report No.: Sunway-LAB-RF-202307 1 Testing Report Customer Name: vivo Product Name: V2556 Sample Model: PD2541F_EX_A_16.0.0.22.W20.V000L1 Reference Standard: GB/T 9410-2008; ANSI/IEEE Std 149-2021 Issue Date: 2025.11.4 Report No.: Sunway-LAB-RF-202307 2 Version Version No. Date Description Formulate Approval A0 2025.11.4 For the first time, formulate Weichangye Hufangben Contents 1.General Information ............................................................................................................................ 3 1. 1 General information of testing institutions ............................................................................ 3 1.2 Test equipment ......................................................................................................................... 4 1.3 Test environment ...................................................................................................................... 4 1.4 Statement ................................................................................................................................. 4 2.Sample Information ........................................................................................................................... 5 2. 1 Client information .................................................................................................................... 5 2.2 Description of EUT(S) ............................................................................................................ 5 2.3 EUT appearance ....................................................................................................................... 6 2.4 EUT setup photo of free space OTAtesing ........................................................................... 6 3.Test Results ......................................................................................................................................... 7 3. 1 Test standard ........................................................................................................................... 7 3.2 Test uncertainty ........................................................................................................................ 7 3.3 Test data ................................................................................................................................... 7 3.3. 1 Typical free space efficiency and gain ....................................................................... 7 3.3.2 Typical free space radiation pattern ............................................................................ 9 （The following is blank） ....................................................... 1 8 Report No.: Sunway-LAB-RF-202307 3 1.General Information 1.1 General information of testing institutions Name Sunway Communication Address 1013, Xihuan Rd., Shajing Town, Bao'an District, Shenzhen Tel / E-mail / Equipment All the equipment used in the report is fixed in 1013, Xihuan Rd., Shajing Town, Bao'an District, Shenzhen Report No.: Sunway-LAB-RF-202307 4 1.2 Test equipment Equipment Model No. Serial No. Manufacturer Calibration date Next calibration date OTA Test System RayZone-5000 Sunway-LAB- RF-D00 GTS 2025.3. 14 2026.3.13 Network Analyzer E5071C Sunway-LAB- R-D01 KEYSIGHT 2025.5.13 2026.5. 12 1.3 Test environment Temperature 22.8°C Humidity 58%RH Pressure 100.23kPa 1.4 Statement (1) The test results in the report are only applicable to the tested samples and the tested samples work under the environment described in the report. (2) Only Sunway Communication have the right to modify the report, and the modification information shall be annotated in the revision form. (3) Any objection to this report shall be raised within 30 days after formal confirmation of the report. (4) This report is invalid if there is any evidence that the sample information provided is falsified. Report No.: Sunway-LAB-RF-202307 5 2.Sample Information 2.1 Client information Name vivo Address No.1, vivo Road, Chang'an, Dongguan, Guangdong, China Contacts / Tel / E-mail / Manufacturer / 2.2 Description of EUT(S) Product Name V2556 Sample Model PD2541F_EX_A_16.0.0.22.W20.V000L1 Antenna Size / Serial No. / Antenna Type PIFA Test Item Antenna gain; Efficiency; Radiation pattern Frequency Range 2400-2500MHz&5150-5850MHz Received Date 2025.11.4 Test Date 2025.11.4 Remark / Report No.: Sunway-LAB-RF-202307 6 3.Test Results 3.1 Test standard Name Parameter Method Standard no. Mobile communication antenna Antenna gain Generic specification for antennas used in the mobile communications GB/T 9410-2008 Radiation pattern Antenna Radiation efficiency IEEE Standard Test Procedures for Antennas ANSI/IEEE Std 149-2021 Gain and directivity 3.2 Test uncertainty The uncertainty was calculated on the basis of the GUM published by ISO, using the inclusion factor of K=2 and the 95% confidence level to express the extended uncertainty. Item Uncertainty Antenna gain ±1dB Radiation efficiency ±10% 3.3 Test data 3.3.1 Typical free space efficiency and gain Frequency/MHz 1500 1510 1520 1530 1540 1550 1560 1570 1580 1590 1600 Peak Gain/dBi -1.25 -0.60 -0.01 0.65 1.01 1.27 1.60 1.59 1.19 0.62 0.06 Efficiency/% -5.95 -5.25 -4.68 -4.01 -3.70 -3.41 -3.29 -3.39 -3.76 -4.24 -4.68 Frequency/MHz 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 Peak Gain/dBi 0.81 0.84 0.7 0.62 0.74 0.88 1.11 1.21 1.04 0.62 0.19 Efficiency/% -3.76 -3.6 -3.57 -3.52 -3.45 -3.42 -3.37 -3.44 -3.65 -4.02 -4.47 Report No.: Sunway-LAB-RF-202307 7 Frequency/MHz 5180 5200 5220 5240 5260 5280 5300 Peak Gain/dBi 1.52 1.50 1.50 1.46 1.24 1.14 1.00 Efficiency/% -4.18 -4.08 -4.05 -4.20 -4.38 -4.51 -4.56 Frequency/MHz 5500 5520 5540 5560 5580 5600 5620 5640 5660 5680 5700 Peak Gain/dBi 0.59 0.66 0.68 0.38 0.42 0.39 0.41 0.59 0.36 0.41 0.49 Efficiency/% -4.92 -4.68 -4.62 -4.60 -4.44 -4.42 -4.32 -4.25 -4.36 -4.28 -4.09 Frequency/MHz 5750 5770 5790 5810 5830 5850 Peak Gain/dBi 0.43 0.18 -0.29 -0.43 -0.17 -0.07 Efficiency/%…

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