2ASP8ASTRO4PROPHONE

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QA-FR-170-B MAXWEST COMMUNICATION LIMITED ADD: ROOM 1802B FORTRESS TOWER 250 KING'S ROAD NORTH POINT Hong Kong TEL: 00852-3464 9345 FAX: 00852-3007 9834 E-mail: [email protected] FCC Authorization Date: 2020-11-11 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , MAXWEST COMMUNICATION LIMITED, Hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratory Corporation on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Celina He Manager

QA-FR-171-A MAXWEST COMMUNICATION LIMITED Add: ROOM 1802B FORTRESS TOWER 250 KING'S ROAD NORTH POINT Hong Kong Tel: 00852-3464 9345 FAX: 00852-3007 9834 Email: [email protected] FCC Confidential Authorization Date: 2020-11-11 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ASP8ASTRO4PRO In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (MAXWEST COMMUNICATION LIMITED) hereby requests long-term confidential treatment of information accompanying this application as outlined below: Block Diagram Schematics Operation Description Parts List/Tune up procedure (for licensed devices) The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Celina He Manager

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS

size:45x62mm IMEI: 35701210054000X MODEL: LTE: B2/B4/B5/B7/B28ab WCDMA: 850/1900 GSM: 850/900/1800/1900 S/N:ATO4PR201000001 FCC ID:2ASP8ASTRO4PRO

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS BT WIFI ANT Aux ANT 2G&3G&4G Main ANT

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. (Dongguan). This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*”. SAR EVALUATION REPORT For MAXWEST COMMUNICATION LIMITED ROOM 1802B FORTRESS TOWER 250 KING'S ROAD, NORTH POINT HONG KONG FCC ID: 2ASP8ASTRO4PRO Report Type: Original Report Product Type: PHONE Report Number: RDG200918004-20A Report Date: 2020-11-18 Reviewed By: Rocky Xiao RF Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Dongguan) No.69 Pulongcun, Puxinhu Industry Area, Tangxia, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG200918004-20A SAR Evaluation Report 2 of 72 Attestation of Test Results EUT Information EUT Description PHONE Tested Model ASTRO 4 PRO FCC ID 2ASP8ASTRO4PRO Serial Number RDG200918004-SA-S1 Test Date 2020-10-13~ 2020-10-17 MODE Max. SAR Level(s) Reported(W/kg) Limit (W/kg) GSM 850 1g Head SAR 0.47 1.6 1g Body SAR 0.52 PCS 1900 1g Head SAR 0.43 1g Body SAR 0.57 WCDMA Band 2 1g Head SAR 0.38 1g Body SAR 0.31 WCDMA Band 5 1g Head SAR 0.57 1g Body SAR 0.54 LTE Band 2 1g Head SAR 0.62 1g Body SAR 0.73 LTE Band 4 1g Head SAR 0.57 1g Body SAR 0.68 LTE Band 5 1g Head SAR 0.32 1g Body SAR 0.60 LTE Band 7 1g Head SAR 0.76 1g Body SAR 0.91 WLAN 2.4G 1g Head SAR 0.16 1g Body SAR 0.16 Simultaneous 1g Head SAR 0.93 1g Body SAR 0.93 1g Body SAR 0.93(Hotspot) Applicable Standards FCC 47 CFR part 2.1093 Radiofrequency radiation exposure evaluation: portable devices RF Exposure Procedures: TCB Workshop April 2019 IEEE1528:2013 IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques IEC 62209-1:2016 Measurement procedure for the assessment of specific absorption rate of human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices – Part 1: Devices used next to the ear (Frequency range of 300 MHz to 6 GHz) KDB procedures KDB 447498 D01 General RF Exposure Guidance v06 KDB 648474 D04 Handset SAR v01r03 KDB 865664 D01 SAR Measurement 100 MHz to 6 GHz v01r04 KDB 865664 D02 RF Exposure Reporting v01r02 KDB 941225 D01 3G SAR Procedures v03r01 KDB 941225 D05 SAR for LTE Devices v02r05 KDB 941225 D06 Hotspot Mode v02r01 KDB 248227 D01 802 11 Wi-Fi SAR v02r02 Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG200918004-20A SAR Evaluation Report 3 of 72 Note: This wireless device has been shown to be capable of compliance for localized specific absorption rate (SAR) for General Population/Uncontrolled Exposure limits specified in FCC 47 CFR part 2.1093 and has been tested in accordance with the measurement procedures specified in IEEE 1528-2013 and RF exposure KDB procedures. The results and statements contained in this report pertain only to the device(s) evaluated. Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG200918004-20A SAR Evaluation Report 4 of 72 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ............................................................................................................................ 5 EUT DESCRIPTION ........................................................................................................................................................ 6 TECHNICAL SPECIFICATION............................................................................................................................................. 6 REFERENCE, STANDARDS, AND GUIDELINES .................................................................................................... 7 SAR LIMITS ..................................................................................................................................................................... 8 FACILITIES ...................................................................................................................................................................... 9 DESCRIPTION OF TEST SYSTEM ........................................................................................................................... 10 EQUIPMENT LIST AND CALIBRATION ................................................................................................................ 16 EQUIPMENTS LIST & CALIBRATION INFORMATION ...................................................................................................... 16 SAR MEASUREMENT SYSTEM VERIFICATION ................................................................................................ 17 LIQUID VERIFICATION ................................................................................................................................................... 17 SYSTEM ACCURACY VERIFICATION .............................................................................................................................. 19 SAR SYSTEM VALIDATION DATA ........................................................................................................................ 20 EUT TEST STRATEGY AND METHODOLOGY .................................................................................................... 25 TEST POSITIONS FOR DEVICE OPERATING NEXT TO A PERSON’S EAR ......................................................................... 25 CHEEK/TOUCH POSITION .............................................................................................................................................. 26 EAR/TILT POSITION .........................................................…

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PROBE CALIBRATION CERTIFICATES DIPOLE CALIBRATION CERTIFICATES

Report No.: RDG200918004-20A Page 1 of 122 Plot 1#: GSM 850_Head Left Cheek_Mid DUT: PHONE; Type: ASTRO 4 PRO; Serial: RDG200918004-SA-S1 Communication System: Generic GSM ; Frequency: 836.6 MHz;Duty Cycle: 1:8 Medium parameters used: f = 836.6 MHz; σ = 0.893 S/m; ε r = 41.383; ρ = 1000 kg/m 3 Phantom section: Left Section DASY5 Configuration: • Probe: EX3DV4 - SN7441; ConvF(10.33, 10.33, 10.33) @ 836.6 MHz; Calibrated: 2020/2/8 • Sensor-Surface: 1.4mm (Mechanical Surface Detection) • Electronics: DAE4 Sn1354; Calibrated: 2020/9/30 • Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412 • Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (71x111x1): Interpolated grid: dx=1.500 mm, dy=1.500 mm Maximum value of SAR (interpolated) = 0.359 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 6.254 V/m; Power Drift = 0.14 dB Peak SAR (extrapolated) = 0.405 W/kg SAR(1 g) = 0.312 W/kg; SAR(10 g) = 0.265 W/kg Maximum value of SAR (measured) = 0.341 W/kg 0 dB = 0.341 W/kg = -4.67 dBW/kg Report No.: RDG200918004-20A Page 2 of 122 Plot 2#: GSM 850_Head Left Tilt_Mid DUT: PHONE; Type: ASTRO 4 PRO; Serial: RDG200918004-SA-S1 Communication System: Generic GSM ; Frequency: 836.6 MHz;Duty Cycle: 1:8 Medium parameters used: f = 836.6 MHz; σ = 0.893 S/m; ε r = 41.383; ρ = 1000 kg/m 3 Phantom section: Left Section DASY5 Configuration: • Probe: EX3DV4 - SN7441; ConvF(10.33, 10.33, 10.33) @ 836.6 MHz; Calibrated: 2020/2/8 • Sensor-Surface: 1.4mm (Mechanical Surface Detection) • Electronics: DAE4 Sn1354; Calibrated: 2020/9/30 • Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412 • Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (71x111x1): Interpolated grid: dx=1.500 mm, dy=1.500 mm Maximum value of SAR (interpolated) = 0.242 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 10.30 V/m; Power Drift = -0.04 dB Peak SAR (extrapolated) = 0.298 W/kg SAR(1 g) = 0.231 W/kg; SAR(10 g) = 0.202 W/kg Maximum value of SAR (measured) = 0.245 W/kg 0 dB = 0.245 W/kg = -6.11 dBW/kg Report No.: RDG200918004-20A Page 3 of 122 Plot 3#: GSM 850_Head Right Cheek_Mid DUT: PHONE; Type: ASTRO 4 PRO; Serial: RDG200918004-SA-S1 Communication System: Generic GSM ; Frequency: 836.6 MHz;Duty Cycle: 1:8 Medium parameters used: f = 836.6 MHz; σ = 0.893 S/m; ε r = 41.383; ρ = 1000 kg/m 3 Phantom section: Right Section DASY5 Configuration: • Probe: EX3DV4 - SN7441; ConvF(10.33, 10.33, 10.33) @ 836.6 MHz; Calibrated: 2020/2/8 • Sensor-Surface: 1.4mm (Mechanical Surface Detection) • Electronics: DAE4 Sn1354; Calibrated: 2020/9/30 • Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412 • Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (61x101x1): Interpolated grid: dx=1.500 mm, dy=1.500 mm Maximum value of SAR (interpolated) = 0.473 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 12.44 V/m; Power Drift = -0.04 dB Peak SAR (extrapolated) = 0.608 W/kg SAR(1 g) = 0.437 W/kg; SAR(10 g) = 0.375 W/kg Maximum value of SAR (measured) = 0.488 W/kg 0 dB = 0.488 W/kg = -3.12 dBW/kg Report No.: RDG200918004-20A Page 4 of 122 Plot 4#: GSM 850_Head Right Tilt_Mid DUT: PHONE; Type: ASTRO 4 PRO; Serial: RDG200918004-SA-S1 Communication System: Generic GSM ; Frequency: 836.6 MHz;Duty Cycle: 1:8 Medium parameters used: f = 836.6 MHz; σ = 0.893 S/m; ε r = 41.383; ρ = 1000 kg/m 3 Phantom section: Right Section DASY5 Configuration: • Probe: EX3DV4 - SN7441; ConvF(10.33, 10.33, 10.33) @ 836.6 MHz; Calibrated: 2020/2/8 • Sensor-Surface: 1.4mm (Mechanical Surface Detection) • Electronics: DAE4 Sn1354; Calibrated: 2020/9/30 • Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412 • Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (61x101x1): Interpolated grid: dx=1.500 mm, dy=1.500 mm Maximum value of SAR (interpolated) = 0.436 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 6.715 V/m; Power Drift = -0.02 dB Peak SAR (extrapolated) = 0.711 W/kg SAR(1 g) = 0.352 W/kg; SAR(10 g) = 0.280 W/kg Maximum value of SAR (measured) = 0.414 W/kg 0 dB = 0.414 W/kg = -3.83 dBW/kg Report No.: RDG200918004-20A Page 5 of 122 Plot 5#: GSM 850_Body Worn Back_Mid DUT: PHONE; Type: ASTRO 4 PRO; Serial: RDG200918004-SA-S1 Communication System: Generic GSM ; Frequency: 836.6 MHz;Duty Cycle: 1:8 Medium parameters used: f = 836.6 MHz; σ = 0.893 S/m; ε r = 41.383; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration: • Probe: EX3DV4 - SN7441; ConvF(10.33, 10.33, 10.33) @ 836.6 MHz; Calibrated: 2020/2/8 • Sensor-Surface: 1.4mm (Mechanical Surface Detection) • Electronics: DAE4 Sn1354; Calibrated: 2020/9/30 • Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412 • Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6.12 (7470) Area Scan (61x101x1): Interpolated grid: dx=1.500 mm, dy=1.500 mm Maximum value of SAR (interpolated) = 0.642 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 18.02 V/m; Power Drift = 0.02 dB Peak SAR (extrapolated) = 2.14 W/kg SAR(1 g) = 0.477 W/kg; SAR(10 g) = 0.273 W/kg Maximum value of SAR (measured) = 0.587 W/kg 0 dB = 0.587 W/kg = -2.31 dBW/kg Report No.: RDG200918004-20A Page 6 of 122 Plot 6#: GSM 850_Body Wron Front_Mid DUT: PHONE; Type: ASTRO 4 PRO; Serial: RDG200918004-SA-S1 Communication System: Generic GSM ; Frequency: 836.6 MHz;Duty Cycle: 1:8 Medium parameters used: f = 836.6 MHz; σ = 0.893 S/m; ε r = 41.383; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration: • Probe: EX3DV4 - SN7441; ConvF(10.33, 10.33, 10.33) @ 836.6 MHz; Calibrated: 2020/2/8 • Sensor-Surface: 1.4mm (Mechanical Surface Detection) • Electronics: DAE4 Sn1354; Calibrated: 2020/9/30 • Phantom: Twin SAM; Type: Twin SAM V5.0; Serial: TP:1412 • Measurement SW: DASY52, Version 52.10 (2); SEMCAD X Version 14.6…

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Report No.: RDG200918004-20A Page 1 of 6 APPENDIX B EUT TEST POSITION PHOTOS Liquid depth ≥ 15cm Phantom Type: Twin SAM; Model: Twin SAM V5.0; S/N: 1412 Report No.: RDG200918004-20A Page 2 of 6 Head Left Cheek Setup Photo Head Left Tilt Setup Photo Report No.: RDG200918004-20A Page 3 of 6 Head Right Cheek Setup Photo Head Right Tilt Setup Photo Report No.: RDG200918004-20A Page 4 of 6 Body (Worn) Back Setup Photo (10mm) Body (Worn) Front Setup Photo (10mm) 10 mm 10 mm Report No.: RDG200918004-20A Page 5 of 6 Body Left Setup Photo (10mm) Body Right Setup Photo (10mm) 10 mm 10 mm Report No.: RDG200918004-20A Page 6 of 6 Body Bottom Setup Photo (10mm) Body Top Setup Photo (10mm) 10mm 10mm

FCC PART 15.247 TEST REPORT For MAXWEST COMMUNICATION LIMITED ROOM 1802B FORTRESS TOWER, 250 KING'S ROAD, NORTH POINT, HONG KONG Report Type: Original Report Product Name: PHONE Re port Number: RDG200918004-00B Re port Date: 2020-11-11 Reviewed By: Ivan Cao Assistant Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.69 Pulongcun, Puxinhu Industry Area, Tangxia, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn FCC ID:2ASP8ASTRO4PRO Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG200918004-00B Page 2 of 52 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 DECLARATIONS ............................................................................................................................................................ 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 7 SUPPORT CABLE LIST AND DETAILS ............................................................................................................................ 9 BLOCK DIAGRAM OF TEST SETUP .............................................................................................................................. 10 SUMMARY OF TEST RESULTS ............................................................................................................................. 11 FCC §15.247 (i) & §1.1310 & §2.1093- RF EXPOSURE .......................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 13 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 EUT SETUP ................................................................................................................................................................ 14 EMI TEST RECEIVER SETUP ....................................................................................................................................... 14 TEST PROCEDURE ...................................................................................................................................................... 15 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 15 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 15 TEST DATA ................................................................................................................................................................ 16 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 18 APPLICABLE STANDARD ............................................................................................................................................ 18 EUT SETUP ................................................................................................................................................................ 18 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 19 TEST PROCEDURE ...................................................................................................................................................... 19 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 19 TEST EQUIPM…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emission -front View Conducted Emission -Side View Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View