2A7DX-A53Smart phone

15.19 Labeling requirements. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and(2) this device must accept any interference received, including interference that may cause undesired operation. 15.21 Information to user. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 15.105 Information to the user. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. Absorption Rate (SAR) information: This Smart phone meets the government's requirements for exposure to radio waves. The guidelines are based on standards that were developed by independent scientific organizations through periodic and thorough evaluation of scientific studies. The standards include a substantial safety margin designed to assure the safety of all persons regardless of age or health. FCC RF Exposure Information and Statement The SAR limit of USA (FCC) is 1.6 W/kg averaged over one gram of tissue. This device was tested for typical body-worn operations with the back of the handset kept 1.0cm from the body. To maintain compliance with FCC RF exposure requirements, use accessories that maintain a 1.0cm separation distance between the user's body and the back of the handset. The use of belt clips, holsters and similar accessories should not contain metallic components in its assembly. The use of accessories that do not satisfy these requirements may not comply with FCC RF exposure requirements, and should be avoided. Body-worn Operation This device was tested for typical body-worn operations. To comply with RF exposure requirements, a minimum separation distance of 1.0 cm must be maintained between the user’s body and the handset,including the antenna. Third-party belt-clips, holsters, and similar accessories used by this device should not contain any metallic components. Body-worn accessories that do not meet these requirements may notcomply with RF exposure requirements and should be avoided. Use only the supplied or an approved antenna. IC Caution:English: This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:1. This device may not cause interference.2. This device must accept any interference, including interference that may cause undesired operation of the device.French:L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :1. L’appareil ne doit pas produire de brouillage;2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement. SAR Statement: This Braven Alta Speaker meets the government's requirements for exposure to radio waves. The guidelines are based on standards that were developed by independent scientific organizations through periodic and thorough evaluation of scientific studies. The standards include a substantial safety margin designed to assure the safety of all persons regardless of age or health. IC RF Exposure Information and Statement the SAR limit of Canada (IC) is 1.6 W/kg averaged over one gram of tissue. Device types: A53 (IC: 25768-A53) has also been tested against this SAR limit. This device was tested for typical body-worn operations with the back of the handset kept 0mm from the body. To maintain compliance with FCC RF exposure requirements, use accessories that maintain a 0mm separation distance between the user's body and the back of the handset. The use of belt clips, holsters and similar accessories should not contain metallic components in its assembly. The use of accessories that do not satisfy these requirements may not comply with FCC RF exposure requirements, and should be avoided. Body-worn Operation This device was tested for typical body-worn operations. To comply with RF exposure requirements, a minimum separation distance of 0mm must be maintained between the user’s body and the handset, including the antenna. Third-party belt-clips, holsters, and similar accessories used by this device should not contain any metallic components. Body-worn accessories that do not meet these requirements may not comply with RF exposure requirements and should be avoided. Use only the supplied or an approved antenna.

DOKE COMMUNICATION (HK) LIMITED 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: DOKE COMMUNICATION (HK) LIMITED Address: RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HONG KONG China Product Name: Smart phone FCC ID: 2A7DX-A53 Model(s): A53 2.911(d)(5)(i) EquipmentType We, [DOKE COMMUNICATION (HK) LIMITED] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Lynne Chen Date: 3/17/2023 Title and Company name: Manager / DOKE COMMUNICATION (HK) LIMITED NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

DOKE COMMUNICATION (HK) LIMITED 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: DOKE COMMUNICATION (HK) LIMITED Address: RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HONG KONG China Product Name: Smart phone FCC ID: 2A7DX-A53 Model(s): A53 2.911(d)(5)(ii) Applicant filing We, [DOKE COMMUNICATION (HK) LIMITED] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter,as an entity producing coveredcommunications equipment. Yours sincerely, Name: Lynne Chen Date: 3/17/2023 Title and Company name: Manager / DOKE COMMUNICATION (HK) LIMITED NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the DOKE COMMUNICATION (HK) LIMITED 2.911 (d)(5)(ii) Applicant Attestation v1.3

DOKE COMMUNICATION (HK) LIMITED U.S. Agent Letter of Attestation To:FederalCommunicationsCommission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date:03-16-2023 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID：2A7DX-A53 DOKE COMMUNICATION (HK) LIMITED (“the applicant”) certifies that, as of the date of the filing of the application, THREE STONES MEDIA LLC(“the agent”) is our designated U.S. agent for service of process for the abovereference FCC ID. The applicant accepts to maintain an agent for service of process in the United States forno less than one year after either the grantee has permanently terminated all marketing and importation of theapplicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicialproceeding involving the equipment, whichever is later. The applicant further acknowledges it is ourresponsibility to inform the FCC whenever the agent information changes. THREE STONES MEDIA LLC ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: THREE STONES MEDIA LLC FRN: 0033401761 GC: 2A99E Address: 1200 Broadway St. APT 329, Los Angeles, CA90015 Signature: Contact Person: Sijie Zhang Tel: +1 267 909 3692Email: [email protected] Applicant Company Name: DOKE COMMUNICATION (HK) LIMITED Address: RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HK CHINA Signature: Contact Person: Lynne Chen Tel: 18825230528Email: [email protected]

DOKE COMMUNICATION (HK) LIMITED Agent Authorization Letter (2023-03-17) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park Sanwei, Xixiang, Bao'an District, Shenzhen, Guangdong, China Alex.li [email protected] to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Lynne Chen / Manager Date/City: 2023-03-17 / HONG KONG Phone: 18825230528 Fax: N/A E-mail: [email protected]

DOKE COMMUNICATION (HK) LIMITED Long Term Confidentiality Request Letter (2023-03-17) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR Product: Smart phone Model No.: A53 FCC ID: 2A7DX-A53 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the  Schematic Diagram  Block Diagram  Operational Description  Software Security Requirements for UNII devices  Part List / BOM List / PCB Layout  Tune-up Procedure Required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Please contact me if there is any information you may need. Sincerely, Lynne Chen / Manager Date/City: 2022-10-17 / HONG KONG Phone: 18825230528 Fax: N/A E-mail: [email protected]

DOKE COMMUNICATION (HK) LIMITED Short Term Confidentiality Request Letter (2023-03-17) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Short Term Confidentiality Request For Product: Smart phone Model No.: A53 FCC ID: 2A7DX-A53 To Whom It May Concern: In accordance with sections 0.457 and 0.459 of CFR 47, <DOKE COMMUNICATION (HK) LIMITED>. requests short-term Confidentiality of following sections of this application for a period of 180 days after grant is issued. Test setup photos Internal photos External Photo User’s manual These documents contain detailed system and equipment descriptions and related information about the product, which <DOKE COMMUNICATION (HK) LIMITED> considers to be proprietary, confidential, and a custom design and otherwise, would not release to the general public. Since this design is a basis from which future technological products will evolve, <DOKE COMMUNICATION (HK) LIMITED> feels that this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give our competitors an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Lynne Chen / Manager Date/City: 2023-03-16 / HONG KONG Phone: 18825230528 Fax: N/A E-mail: [email protected]

ATTACHMENT PHOTOGRAPHS OF EUT Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 Photo 10

ATTACHMENT PHOTOGRAPHS OF EUT Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 Photo 10 Photo 11 Photo 12 Photo 13 Photo 14 Photo 15 Photo 16 BT/WIFI ANT Photo 17 Photo 18 GSM/WCDMA/LTE Main ANT LTE AUX ANT

OTA TEST REPORT 01 Test Laboratory 02 General Description of Equipment under Test 03 Test Conditions 04 Test Results 05 Equipment List contents 目录 Test Laboratory 01 1.1 Notes of the Test Report This report shall not be reproduced in full or paritial,without the written approval of 1.2 Test facility 1.3 Testing Location Shenzhen Maya Communication Equipment Co. , Ltd. has been included in the Italian Institute of Laboratory Accreditation Executive Measurement 1.4 Laboratory Environment Temperature22°C-25°C Relative humidity≤80% Shield effect0.7-6GHz >100dB Ground resistance <0.5Ω General Descrlption of Equipment under Test 02 2.1 Appllcant and Manufacturer Information Appllcant NameShenzhen Guanqun Electronics Co. , Ltd. Appllcant address Block A, Block 7B01, Tianyao Plaza, Anhongji, Tai Leng community, Minzhi Street, Longhua District, Shenzhen City Manufacturer NameShenzhen Maya Communication Equipment Co. , Ltd. Manufacturer address 2/F, Unit 2, Building 1, Guanghui Science and Technology Park, Minqing Road, Longhua District, Shenzhen City, Guangdong Province 2.2 General Information EUT Description Project name Antenna TypeFPC Antenna Antenna ManufacturerShenzhen Maya Communication Equipment Co. , Ltd. Test Frequency1710MHz~2700MHz,2400MHz~2500MHz,5200MHz~5800MHz, 1570MHz~1580MHz,700MHz~960MHz, Note:The EUT is sent from the applicant to MAYA and the information of the EUT is declared by the applicant. All indications of Pass/Fail in this report are opinions expressed by MAYA based on interpretations and/or observations of test results.Measurement Uncertainties were not taken into account and are published for informational purposes only. 2.3 Test Date The test is performed from August 8,2022 to August 18,2022 2.4 Receiving Date August 8,2022 2.5 Applied Standards Test lab.of the antenna gain and radiation pattern measurement : Shenzhen Maya Communication Equipment Co. , Ltd. Test Conditions 03 3.1 Test method description and data Device namePurpose Vector Network Analyzer S11/Impedance/ Passive Test Agilent 8960 SP6010 R&S CMU200 Mobile Communication Device Test including GSM, GPRS, EDGE, CDMA2000,1XEV-DO, TD-SCDMA, WCDMA, HSDPA R&S CMW500 MT8820C Mobile phone test including TD-SCDMA, WCDMA, HSDPA, LTE, WIFI, GPS SP9500E Contains 5G, SA, NSA Agilent E4438C Test active GPS MVG Chamber Passive Test / OTA active Test / Efficiency/Gain 3.2 Passive Test Report Test Equipment：Network analyzer Test method: A 50 ohm CABLE is used to export from the instrument test port. After calibration, the SMA Joint of the handset is connected with the calibrated parts, and the data of the relevant frequency points such as echo loss or standing wave ratio is recorded. 3.3 Active Test Report TRP/TIS Testing Tools: General Surveyor, Network Analyzer, full-wave Far-field ETS, French MVG SG24LT (Satmio) near-field 3D anechoic chamber,High Precision positioning system and its controller and computer test environment with automatic test program:Temperature 22 ° C ± 3 ° C, humidity 60% ± 15%:Using the Test Method and calculation of TRP in EST or Satimo 24LT system software, DUT (Device Under Test) is in the state of maximum transmitting power when TRP is tested, the position of the DUT is controlled by the positioning system. The 15-degree step is used to measure the 3D effective radiated power (EIRP) at each point. The mean value on the sphere is calculated by integrating,The formula is as follows: 3.3 Active Test Report In the TIS test, the DUT is in the state of maximum transmitting power. Three channels are selected to test. By controlling the position of the DUT, the receiving sensitivity of each point of the 3D is measured at a step length of 30 degrees, the mean value on the sphere is calculated by integration,The formula is as follows: Test Results 04 4.1 Gain and Efficiency Equipment List 05 5.1 Type of EquipmentManufactureModel NumberS/NCalibration Date Network AnalyzerKEYSIGHTE5071CMY465283462021-12-11 Network AnalyzerAgilent Technologies E5071BMY422008092021-12-11 5.2 ANNEX A 3-D Pattern Plots 700-960MHz 5.2 ANNEX A 3-D Pattern Plots 1710-2700MHz 5.2 ANNEX A 3-D Pattern Plots 2400-2500MHz 5.2 ANNEX A 3-D Pattern Plots 5200-5800MHz 5.2 ANNEX A 3-D Pattern Plots 1570-1580MHz Antenna

Report No.: STR230214003001E Version.1.3 Page 1 of 95 RADIO TEST REPORT FCC ID: 2A7DX-A53 Product: Smart phone Trade Mark: Blackview Model No.: A53 Family Model: N/A Report No.: STR230214003001E Issue Date: Mar 09, 2023 Prepared for DOKE COMMUNICATION (HK) LIMITED RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HONG KONG China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen 518126 P.R. China Tel. 400-800-6106, 0755-2320 0050, 0755-2320 0090 Website: http://www.ntek.org.cn Report No.: STR230214003001E Version.1.3 Page 2 of 95 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.3 NUMBER OF HOPPING CHANNEL ........................................................................................................... 25 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT ........................................................................... 26 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................................ 27 7.6 20DB BANDWIDTH TEST .......................................................................................................................... 29 7.7 PEAK OUTPUT POWER .............................................................................................................................. 30 7.8 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 31 7.9 SPURIOUS RF CONDUCTED EMISSION .................................................................................................. 32 7.10 ANTENNA APPLICATION .......................................................................................................................... 33 7.11 FREQUENCY HOPPING SYSTEM (FHSS) EQUIPMENT REQUIREMENTS ......................................... 34 8 TEST RESULTS ................................................................................................................................................... 35 8.1 DWELL TIME ................................................................................................................................................... 35 8.2 MAXIMUM CONDUCTED OUTPUT POWER ....................................................................................................... 45 8.3 -20DB BANDWIDTH ........................................................................................................................................ 51 8.4 OCCUPIED CHANNEL BANDWIDTH .................................................................................................................. 57 8.5 CARRIER FREQUENCIES SEPARATION .............................................................................................................. 63 8.6 NUMBER OF HOPPING CHANNEL ..................................................................................................................... 69 8.7 BAND EDGE .................................................................................................................................................... 72 8.8 BAND EDGE(HOPPING) ................................................................................................................................... 79 8.9 CONDUCTED RF SPURIOUS EMISSION ............................................................................................................. 86 Report No.: STR230214003001E Version.1.3 Page 3 of 95 1 TEST RESULT CERTIFICATION Applicant’s name ........................ : DOKE COMMUNICATION (HK) LIMITED Address ....................................... : RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HONG KONG China Manufacturer's Name ................. : Shenzhen DOKE Electronic Co.,Ltd Address ....................................... : 801, …

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Radiated Measurement Photos Conducted Measurement Photos