A3LSMS741BPortable Handset

FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C1 of C24 Appendix C: System Check Plots RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) CLA-13 - SN1041 24.5 Flat 0 CW, 0 13.000 14.3, 16.56,15.27 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-24 22.5 22.6 16.4.0.5005 ELI V8.0 - 2216 Head Simulating Liquid 0.768 54.0 EX3DV4 - SN7872, 2025-08-08 DAE4ip Sn1843, 2025-07-30 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.135 4.81 psSAR10g 0.082 -1.71 Peak SAR (Extrapolated) 0.280 5.41 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C2 of C24 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D750V3 - SN1235 17.0 Flat 15 CW, 0 750.000 9.65, 9.71,9.7 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-03 21.9 20.8 17.0.4.7034 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.860 43.8 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.417 -4.25 psSAR10g 0.275 -3.57 Peak SAR (Extrapolated) 0.615 -2.61 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C3 of C24 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D835V2 - SN4d311 17.0 Flat 15 CW, 0 835.000 9.17, 9.24,9.23 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-03 21.9 20.8 17.0.4.7034 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.891 43.6 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.499 1.39 psSAR10g 0.328 2.74 Peak SAR (Extrapolated) 0.743 5.14 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C4 of C24 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D835V2 - SN4d311 17.0 Flat 15 CW, 0 835.000 9.05, 8.71,8.68 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-08 21 20.2 17.0.4.7034 Twin-SAM V8.0 - 2164 Head Simulating Liquid 0.894 44.5 EX3DV4 - SN7853, 2025-11-07 DAE4ip Sn1844, 2025-11-05 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.490 -0.44 psSAR10g 0.324 1.49 Peak SAR (Extrapolated) 0.702 -0.66 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C5 of C24 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D835V2 - SN4d311 17.0 Flat 15 CW, 0 835.000 9.17, 9.24,9.23 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-27 23.7 22 18.0.0.7250 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.886 45.1 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.498 1.19 psSAR10g 0.327 2.43 Peak SAR (Extrapolated) 0.732 3.58 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C6 of C24 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D835V2 - SN4d311 17.0 Flat 15 CW, 0 835.000 9.17, 9.24,9.23 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-29 22.8 21.4 18.0.0.7250 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.882 44.7 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.505 2.61 psSAR10g 0.331 3.68 Peak SAR (Extrapolated) 0.749 5.99 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741B SAR-001: SAR Test Report RevA Test Report SN: 2026.016.01 Page C7 of C24 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D1750V2 - SN1205 17.0 Flat 10 CW, 0 1750.000 7.78, 7.65,7.4 T…

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FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page B1 of B9 Appendix B: Tissue Stimulating Liquids, System Checks and System Validation B.1. SAR System Check Prior to SAR assessment, the system is verified to ±10% of the SAR measurement on the reference dipole at the time of calibration by the calibration facility. Full system validation status and result summary can be found in Section B.4. Table 1 System Check Results (SAR) System Frequency (MHz) Tissue Type Date Amb. Temp. (°C) Tissue Temp (°C) Input Power (dBm) Verification Source SN Probe SN DAE SN Measured 1g SAR (W/Kg) 1W Target 1g SAR (W/Kg) 1W Normalized 1g SAR (W/Kg) 1g SAR Deviation Measured 10g SAR (W/Kg) 1W Target 10g SAR (W/Kg) 1W Normalized 10g SAR (W/Kg) 10g SAR Deviation Measured APD 4 cm2 (W/m2) 1W target APD 4cm2 (W/m2) 1W Normalized APD 4cm2 (W/m2) APD 4cm2 Deviation Gamma13Head5/20/202622.823.424.51041787218430.1370.4570.4866.37%0.0840.2960.2980.69%N/AN/AN/AN/A Epsilon750Head5/6/202622.823.4171235797118620.4148.6908.260-4.94%0.2735.6905.447-4.27%N/AN/AN/AN/A Epsilon750Head5/11/202623.122.7171235797118620.4288.6908.540-1.73%0.2835.6905.647-0.76%N/AN/AN/AN/A Zeta750Head5/20/202621.820.5171235796919330.4008.6907.981-8.16%0.2665.6905.307-6.72%N/AN/AN/AN/A Epsilon750Head6/1/202621.721.8171235797118620.4108.6908.181-5.86%0.2715.6905.407-4.97%N/AN/AN/AN/A Epsilon750Head6/8/202623.021.5171235797118620.4078.6908.121-6.55%0.2695.6905.367-5.67%N/AN/AN/AN/A Epsilon835Head5/11/202623.122.7174d311797118620.5069.82010.0962.81%0.3326.3706.6243.99%N/AN/AN/AN/A Zeta835Head5/13/202621.520.3174d311796919330.4769.8209.497-3.28%0.3146.3706.265-1.65%N/AN/AN/AN/A Epsilon835Head5/18/202620.521.3174d311797118620.5039.82010.0362.20%0.3316.3706.6043.68%N/AN/AN/AN/A Zeta835Head5/20/202621.820.5174d311796919330.4779.8209.517-3.08%0.3166.3706.305-1.02%N/AN/AN/AN/A Epsilon835Head6/1/202621.721.8174d311797118620.4979.8209.9160.98%0.3276.3706.5252.43%N/AN/AN/AN/A Epsilon835Head6/17/202624.123.0174d311797118620.4849.8209.657-1.66%0.3186.3706.345-0.39%N/AN/AN/AN/A Delta1750Head5/6/202622.722.4171205785318441.80036.50035.915-1.60%0.96319.20019.2140.07%N/AN/AN/AN/A Delta1750Head5/20/202621.321.1171205785318441.80036.50035.915-1.60%0.96619.20019.2740.39%N/AN/AN/AN/A Zeta1750Head5/26/202621.520.5171205796919331.82036.50036.314-0.51%0.97019.20019.3540.80%N/AN/AN/AN/A Zeta1750Head6/1/202620.821.0171205796919331.78036.50035.516-2.70%0.94819.20018.915-1.48%N/AN/AN/AN/A Zeta1750Head6/7/202621.120.0171205796919331.75036.50034.917-4.34%0.94019.20018.755-2.32%N/AN/AN/AN/A Zeta1750Head6/30/202624.721.1171205796919331.75036.50034.917-4.34%0.93819.20018.716-2.52%N/AN/AN/AN/A Delta1900Head5/4/2026 22.322.2175d252785318442.01039.80040.1050.77%1.06021.00021.1500.71%N/AN/AN/AN/A Delta1900Head5/6/202622.722.4175d252785318442.04039.80040.7032.27%1.07021.00021.3491.66%N/AN/AN/AN/A Zeta1900Head5/11/202622.522.2175d252796919331.87039.80037.311-6.25%0.98121.00019.574-6.79%N/AN/AN/AN/A Delta1900Head5/20/202621.321.1175d252785318442.02039.80040.3041.27%1.06021.00021.1500.71%N/AN/AN/AN/A Zeta1900Head6/1/202620.821.0175d252796919331.88039.80037.511-5.75%0.99021.00019.753-5.94%N/AN/AN/AN/A Zeta1900Head6/7/202621.120.0175d252796919331.93039.80038.509-3.24%1.02021.00020.352-3.09%N/AN/AN/AN/A Delta1900Head6/24/202621.621.9175d252785318442.00039.80039.9050.26%1.05021.00020.950-0.24%N/AN/AN/AN/A Gamma2300Head5/12/202624.723.1171139787218432.44049.00048.684-0.64%1.18023.70023.544-0.66%N/AN/AN/AN/A Beta2300Head5/26/202622.622.2171139785718382.50049.00049.8821.80%1.21023.70024.1431.87%N/AN/AN/AN/A Beta2450Head5/28/202621.922.2171112785718382.56050.60051.0790.95%1.21023.70024.1431.87%N/AN/AN/AN/A Beta2450Head6/8/202622.420.9171112785718382.60050.60051.8772.52%1.23023.70024.5423.55%N/AN/AN/AN/A Epsilon2450Head6/10/202621.720.9171112797118622.40050.60047.886-5.36%1.14023.70022.746-4.03%N/AN/AN/AN/A Delta2450Head6/14/202620.420.8171112785318442.50050.60049.882-1.42%1.17023.70023.345-1.50%N/AN/AN/AN/A Epsilon2450Head6/14/202621.221.2171112797118622.45050.60048.884-3.39%1.16023.70023.145-2.34%N/AN/AN/AN/A Beta2600Head5/18/202621.720.4171215785718382.75055.30054.870-0.78%1.25024.90024.9410.16%N/AN/AN/AN/A Delta2600Head5/27/202622.822.1171215785318442.60055.30051.877-6.19%1.18024.90023.544-5.45%N/AN/AN/AN/A Delta2600Head6/1/202621.921.8171215785318442.53055.30050.480-8.72%1.14024.90022.746-8.65%N/AN/AN/AN/A Beta2600Head6/3/202621.921.9171215785718382.70055.30053.872-2.58%1.22024.90024.342-2.24%N/AN/AN/AN/A Zeta2600Head6/17/202624.122.0171215 796919332.59055.30051.677-6.55%1.18024.90023.544-5.45%N/AN/AN/AN/A Delta3500Head5/13/202621.520.8171154785318443.09065.10061.654-5.29%1.18024.60023.544-4.29%N/AN/AN/AN/A Gamma3500Head6/3/202621.920.8171154787218433.25065.10064.846-0.39%1.24024.60024.7410.57%N/AN/AN/AN/A Delta3500Head6/7/202620.520.9171154785318443.12065.10062.252-4.37%1.19024.60023.744-3.48%N/AN/AN/AN/A Delta3500Head6/24/202622.821.3171154785318443.12065.10062.252-4.37%1.18024.60023.544-4.29%N/AN/AN/AN/A Delta3700Head5/13/202621.520.8171130785318443.24066.60064.646-2.93%1.21024.50024.143-1.46%N/AN/AN/AN/A Gamma3700Head6/3/202621.920.8171130787218433.38066.60067.4401.26%1.26024.50025.1402.61%N/AN/AN/AN/A Delta3700Head6/7/202620.520.9171130785318443.12066.60062.252-6.53%1.17024.50023.345-4.72%N/AN/AN/AN/A Delta3700Head6/24/202622.821.3171130785318443.15066.60062.851-5.63%1.18024.50023.544-3.90%N/AN/AN/AN/A Delta3900Head5/13/202621.520.8171101785318443.25070.20064.846-7.63%1.15024.60022.946-6.73%N/AN/AN/AN/A Gamma5250Head6/10/202621.121.9171396787218433.88077.90077.416-0.62%1.11022.40022.147-1.13%N/AN/AN/AN/A Gamma5250Head6/14/202621.421.1171396787218433.93077.90078.4140.66%1.12022.40022.347-0.24%N/AN/AN/AN/A Gamma5250Head6/17/202624.524.0171396787218433.94077.90078.6130.92%1.13022.40022.5460.65%N/AN/AN/AN/A Gamma5600Head6/10/202621.121.9171396787218434.18081.10083.4022.84%1.18023.30023.5441.05%N/AN/AN/AN/A Gamma5600Head6/14/202621.421.1171396787218434.17081.10083.2…

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FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C1 of C61 Appendix C: System Check Plots RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) CLA-13 - SN1041 24.5 Flat 0 CW, 0 13.000 14.3, 16.56,15.27 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-05-20 22.8 23.4 16.4.0.5005 ELI V8.0 - 2216 Head Simulating Liquid 0.752 52.9 EX3DV4 - SN7872, 2025-08-08 DAE4ip Sn1843, 2025-07-30 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 36.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.137 6.37 psSAR10g 0.084 0.69 Peak SAR (Extrapolated) 0.287 8.07 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C2 of C61 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D750V3 - SN1235 17.0 Flat 15 CW, 0 750.000 9.65, 9.71,9.7 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-05-06 22.8 23.4 17.0.4.7034 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.891 41.0 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.414 -4.94 psSAR10g 0.273 -4.27 Peak SAR (Extrapolated) 0.636 0.71 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C3 of C61 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D750V3 - SN1235 17.0 Flat 15 CW, 0 750.000 9.62, 9.46,9.15 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-05-20 21.8 20.5 17.0.4.7034 Twin-SAM V8.0 - 2238 Head Simulating Liquid 0.849 43.8 EX3DV4 - SN7969, 2026-01-13 DAE4ip Sn1933, 2026-01-07 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.400 -8.16 psSAR10g 0.266 -6.72 Peak SAR (Extrapolated) 0.558 -11.64 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C4 of C61 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D750V3 - SN1235 17.0 Flat 15 CW, 0 750.000 9.65, 9.71,9.7 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-01 21.7 21.8 17.0.4.7034 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.867 43.8 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.410 -5.86 psSAR10g 0.271 -4.97 Peak SAR (Extrapolated) 0.598 -5.3 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C5 of C61 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D750V3 - SN1235 17.0 Flat 15 CW, 0 750.000 9.65, 9.71,9.7 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-06-08 23 21.5 17.0.4.7034 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.870 43.2 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.407 -6.55 psSAR10g 0.269 -5.67 Peak SAR (Extrapolated) 0.605 -4.2 psAPD (4.0 cm², sq) N/A N/A FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C6 of C61 RF SAFETY LABORATORY System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D750V3 - SN1235 17.0 Flat 15 CW, 0 750.000 9.65, 9.71,9.7 Test Setup Test Date Ambient Temp [°C] TSL Temp [°C] Measurement SW Phantom TSL Type Cond. [S/m] Perm. Probe, Cal. Date DAE, Cal. Date 2026-05-11 23.1 22.7 18.0.0.7250 Twin-SAM V8.0 - 2233 Head Simulating Liquid 0.890 40.5 EX3DV4 - SN7971, 2026-04-14 DAE4ip Sn1862, 2026-01-08 Scans Setup Area Scan Zoom Scan Grid Extents [mm] 40.0 x 90.0 30.0 x 30.0 x 31.2 Grid Steps [mm] 10.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Grading Ratio N/A 1.5 Measurement Results SAR [W/kg] or APD [W/m²] Deviation [%] psSAR1g 0.428 -1.73 psSAR10g 0.283 -0.76 Peak SAR (Extrapolated) 0.664 5.15 psAPD (4.0 cm², sq) N/A N/A RF SAFETY LABORATORY FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page C7 of C61 System Verification Verification Conditions Verification Source Power [dBm] Phantom Section Test Distance [mm] Signal, UID Frequency [MHz] ConvF (x, y, z) D835V2 - SN4d311 17.0 Flat 15 CW, 0 835.000 9.17, 9.24,9.23 …

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RF Safety Laboratory, LLC 5520 Research Park Drive, Suite 140 Catonsville, Maryland 21228 USA +1 202 240 9240 [email protected] Object: Date Issued: D1900V2 – SN: 5d252 11/8/2024 Page 1 of 3 IN-HOUSE SAR VERIFICATION SOURCE CALIBRATION EXTENSION Object D1900V2 – SN: 5d252 Description SAR Validation Dipole at 1900 MHz Procedure (s) Procedure for SAR Verification Source Calibration Extension In-house Check Date 11/7/2024 Equipment List CBT: Components calibrated before testing. Prior to testing, the measurement paths containing a cable, attenuator, coupler or filter were connected to a calibrated source (i.e. a signal generator, power sensor, or VNA) to determine the losses of the measurement path. The power meter offset was then adjusted to compensate for the measurement system losses. This level offset is stored within the power meter before measurements are made. This calibration verification procedure applies to the system verification and output power measurements. The calibrated reading is then taken directly from the power meter after compensation of the losses for all final power measurements. Measurement Uncertainty = ±27% (k=2) Name Function Signature Tested By: Yue Li Engineer Approved By: Phuong Nguyen Technical Manager ManufacturerModelDescriptionSerial Number Calibration Date Calibration Due CBT Rohde & SchwarzZNL20Vector Network Analyzer1012029/12/20249/12/2025 Rohde & SchwarzZN-Z135Calibration Kit5000-30919283910/31/2410/31/26 Control Company4040Ambient Thermometer2305816578/28/20238/28/2025 Control Company4352Long Stem Liquid Thermometer2306622239/28/20239/28/2025 Micro-CoaxUFB205A-0-0240-30x30SMA M-F RF test Cable (DC - 18 GHz)-✓ Mini-CircuitsBW-N20W20+20dB RF Fixed Attenuator (DC - 18 GHz)-✓ Mini-CircuitsNF-SF50+RF Adapter N Male to SMA Female (DC - 18 GHz)-✓ SPEAGDAE4ipData Acquisition Electrionics with Integ. Power18398/14/20248/14/2025 SPEAGDAK-3.5DAK-3.5 Dielectric Probe13499/2/20249/2/2025 SPEAGEX3DV4SAR Measurement Probe78363/15/20243/15/2025 SPEAGPowersource1Signal Generator43411/5/20241/5/2025 RF Safety Laboratory, LLC 5520 Research Park Drive, Suite 140 Catonsville, Maryland 21228 USA +1 202 240 9240 [email protected] Object: Date Issued: D1900V2 – SN: 5d252 11/8/2024 Page 2 of 3 Per FCC KDB Publication 865664 D01, dipole can have longer calibration intervals of up to three years when it is demonstrated that the SAR target, impedance and return loss of the dipole have remained stable according to the following requirements: 1. Measured SAR does not deviate from the calibrated SAR value by more than 10%. 2. Return loss does not deviate by more than 20% from the previous measurement (i.e. value in dB x 0.2) and meet the required minimum return-loss. 3. Real and imaginary part of the impedance do not deviate by more than 5 Ω from the previous measurement. The following dipole was checked to pass the above 3 requirements to have an extended calibration interval: Dipole SN Freq (MHz) In-house Check Date Cal Date Head SAR target (1g) @ 30dBm (W/kg) Measured Head SAR (1g) @ 17dBm (W/kg) 1g SAR Deviation (%) Head SAR target (10g) @ 30dBm (W/kg) Measured Head SAR (10g) @ 17dBm (W/kg) 10g SAR Deviation (%) Cert Head Impedance (Ohm) - Real Measured Head Impedance (Ohm) - Real Head Impedance Deviation (Ohm) - Real Cert Head Impedance (Ohm) - Imaginary Measured Head Impedance (Ohm) - Imaginary Head Impedance Deviation (Ohm) - Imaginary Cert Head Return Loss (dB) Measured Head Return Loss (dB) Return Loss Deviation (%) PASS/FAIL 5d252190011/7/202410/6/202339.82.073.77%211.082.61%48.847.6-1.25.95.7-0.2-24.4-23.911.17%PASS RF Safety Laboratory, LLC 5520 Research Park Drive, Suite 140 Catonsville, Maryland 21228 USA +1 202 240 9240 [email protected] Object: Date Issued: D1900V2 – SN: 5d252 11/8/2024 Page 3 of 3 Impedance and Return-Loss Measurement Plot for Head TSL RF Safety Laboratory, LLC 5520 Research Park Drive, Suite 140 Catonsville, Maryland 21228 USA +1 202 240 9240 [email protected] Object: Date Issued: D1900V2 – SN: 5d252 07/29/2025 Page 1 of 3 IN-HOUSE SAR VERIFICATION SOURCE CALIBRATION EXTENSION Object D1900V2 – SN: 5d252 Description SAR Validation Dipole at 1900 MHz Procedure (s) Procedure for SAR Verification Source Calibration Extension In-house Check Date 07/29/2025 Equipment List CBT: Components calibrated before testing. Prior to testing, the measurement paths containing a cable, attenuator, coupler or filter were connected to a calibrated source (i.e. a signal generator, power sensor, or VNA) to determine the losses of the measurement path. The power meter offset was then adjusted to compensate for the measurement system losses. This level offset is stored within the power meter before measurements are made. This calibration verification procedure applies to the system verification and output power measurements. The calibrated reading is then taken directly from the power meter after compensation of the losses for all final power measurements. Measurement Uncertainty = ±27% (k=2) Name Function Signature Tested By: Yue Li Engineer Approved By: Phuong Nguyen Technical Manager ManufacturerModelDescriptionSerial Number Calibration Date Calibration Due CBT Rohde & SchwarzZNL20Vector Network Analyzer1012029/12/20249/12/2025 Rohde & SchwarzZN-Z135Calibration Kit5000-30919283910/31/2410/31/26 Control Company4040Ambient Thermometer2305816578/28/20238/28/2025 Control Company4040Ambient Thermometer2305816628/28/20238/28/2025 Control Company4352Long Stem Liquid Thermometer2306622239/28/20239/28/2025 Control Company4352Long Stem Liquid Thermometer2306622129/28/20239/28/2025 Micro-CoaxUFB205A-0-0240-30x30SMA M-F RF test Cable (DC - 18 GHz)-✓ Maury-Micro360D10dB RF Fixed Attenuator (DC - 18 GHz) + Short Circuit Termination779912/28/202412/28/2025 Huber+SuhnerSF126High Performance RF Cable570292/126✓ SPEAGDAE4ipData Acquisition Electrionics with Integ. Power18399/4/20249/4/2025 SPEAGDAK-3.5DAK-3.5 Dielectric Probe13499/2/20249/2/2025 SPEAGEX3DV4SAR Measurement Pr…

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FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page E1 of E8 Appendix E: Simultaneous Transmission Analysis E.1. Introduction According to FCC KDB Publication 447498 D04v01, transmitters are considered to be operating simultaneously when there is overlapping transmission, with the exception of transmissions during network hand-offs with maximum hand-off duration less than 30 seconds. Table E-1 - Supported Simultaneous Transmission Scenarios Note: - * Bluetooth tethering is only supported on Ant H. - NFC can simultaneously transmit with all the above combinations and was evaluated for phablet based on usage conditions #ScenarioHead Body-wornHotspot Phablet 1 WWAN + 2.4 GHz WIFI_SISO Yes Yes Yes Yes 2WWAN + 2.4 GHz WIFI_MIMOYesYesYes Yes 3WWAN + 5 GHz WIFI_SISOYesYesYes Yes 4WWAN + 5 GHz WIFI_MIMOYesYesYesYes 5WWAN + 6 GHz WIFI_SISOYesYesYes Yes 6WWAN + 6 GHz WIFI_MIMOYesYesYesYes 7WWAN + 2.4 GHz Bluetooth_SISO Yes YesYes*Yes 8WWAN + 2.4 GHz Bluetooth_MIMOYesYesN/AYes 9WWAN + 2.4 GHz WIFI_SISO + 5 GHz WIFI_SISOYesYesYesYes 10WWAN + 2.4 GHz WIFI_SISO + 6 GHz WIFI_SISOYesYesYesYes 11WWAN + 2.4 GHz WIFI_SISO + 5 GHz WIFI_MIMOYesYesYesYes 12 WWAN + 2.4 GHz WIFI_SISO + 6 GHz WIFI_MIMOYesYesYesYes 13WWAN + 2.4 GHz WIFI_MIMO + 5 GHz WIFI_SISOYesYesYesYes 14 WWAN + 2.4 GHz WIFI_MIMO + 6 GHz WIFI_SISOYesYesYesYes 15WWAN + 5 GHz WIFI_SISO + 2.4 GHz Bluetooth_SISOYes Yes Yes*Yes 16WWAN + 6 GHz WIFI_SISO + 2.4 GHz Bluetooth_SISO Yes YesYes*Yes 17 WWAN + 5 GHz WIFI_SISO + 2.4 GHz Bluetooth_MIMOYes YesN/AYes 18WWAN + 6 GHz WIFI_SISO + 2.4 GHz Bluetooth_MIMOYesYesN/AYes 19WWAN + 2.4 GHz WIFI_J + 2.4 GHz Bluetooth_HYesYesYesYes 20 WWAN + 5 GHz WIFI_MIMO + 2.4 GHz Bluetooth_SISOYesYesYes*Yes 21WWAN + 6 GHz WIFI_MIMO + 2.4 GHz Bluetooth_SISOYesYesYes*Yes 22WWAN + 5 GHz WIFI_MIMO + 2.4 GHz Bluetooth_MIMOYesYesN/AYes 23WWAN + 6 GHz WIFI_MIMO + 2.4 GHz Bluetooth_MIMOYesYesN/AYes 24 WWAN + 5 GHz WIFI_SISO + 2.4 GHz WIFI_J + 2.4 GHz Bluetooth_HYes YesYesYes 25WWAN + 6 GHz WIFI_SISO + 2.4 GHz WIFI_J + 2.4 GHz Bluetooth_HYesYesYesYes 26WWAN + 2.4 GHz WIFI_MIMO + 5 GHz WIFI_MIMOYesYesYesYes 27 WWAN + 2.4 GHz WIFI_MIMO + 6 GHz WIFI_MIMOYes Yes YesYes 28 WWAN + 5 GHz WIFI_MIMO + 2.4 GHz WIFI_J + 2.4 GHz Bluetooth_HYes Yes YesYes 29WWAN + 6 GHz WIFI_MIMO + 2.4 GHz WIFI_J + 2.4 GHz Bluetooth_HYesYesYesYes FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page E2 of E8 E.2. Procedures This device contains transmitters that may operate simultaneously. Therefore, simultaneous transmission analysis is required. Per FCC KDB Publication 447498 D04v01 and IEEE 1528-2013 Section 6.3.4.1.2, simultaneous transmission SAR test exclusion may be applied when the sum of SAR for all the simultaneous transmitting antennas in a specific physical test configuration is ≤ 1.6 W/kg for 1g and 4 W/kg for 10g. The different test positions in an exposure condition may be considered collectively to determine SAR test exclusion according to the sum of 1g or 10g SAR. Per FCC KDB Publication 941225 D06v02r01, the devices edges with antennas more than 2.5 cm from edge are not required to be evaluated for SAR (“-“). This device is enabled with S.LSI with pre-defined sub6 antenna groups (AG0 and AG1) for WWAN, and FastConnect for WLAN. Simultaneous transmission analysis is performed per antenna group. Below analysis demonstrates the mutually exclusive operation of AG0 and AG1 and the compliance between each antenna group with non- S.LSI Radios. For this model, WWAN/WLAN Radios are managed under S.LSI and FastConnect. Non-time averaging Radios include NFC/BT. When operating in the same antenna group, simultaneous transmission compliance between radio operations within an antenna group is demonstrated in the Part 2 Report during algorithm validation. Part 2 Report also demonstrates simultaneous transmission compliance between WWAN and WLAN radio operation via C-TAS algorithm. Therefore, no further simultaneous analysis is needed within an antenna group. E.3. S.LSI Antenna Grouping and FastConnect control via C-TAS The S.LSI operates based on pre-defined sub6 antenna groups (AG0 and AG1). Sub6 WWAN antennas in the device are grouped based on spatial variation of RF exposure distributions. Since C-TAS control both S.LSI (WWAN) and Fastconnect (WLAN) on the system level, and all WLAN antennas are on top of the DUT, WLAN radios are included in the AG1 in the below analysis. Either of the conditions below for all exposure scenarios shall be demonstrated to show AG0 is spatially separated from AG1: a) Sum of SAR of each antenna from each of the sub6 AGs and the RF exposure from radios outside S.LSI/FastConnect is less than regulatory limits. This condition must be demonstrated for all antenna combinations of sub6 AGs. (Or) b) Every antenna from each sub6 AG meets SPLSR criteria (Section 4.3.2(c) in FCC KDB 447498 D04) with every antenna from another sub6 AG. This criterion must be demonstrated for all antenna combinations for each pair of AGs. This device supports two AGs: AG0 and AG1, with AG0 having 4 antennas (A,B,D,C ) and AG1 having 5 WWAN/WLAN antennas (E,F,I,H ,J). The conditions are verified through the following criteria for a given exposure position: i) Summation criteria: FCC ID: A3LSMS741U SAR-001: SAR Test Report RevA Test Report SN: 2026.014.01 Page E3 of E8 1. Obtain reported SAR at reported P limit for all supported Sub6/WLAN/BT frequency bands from all antennas supported in each antenna group. Reported P limit is min{P limit + unc, P max +unc}. 2. Determine the overall maximum reported SAR from all Sub6 WWAN/WLAN radios for each antenna on each antenna group, denoted as max.exp.ant AG0 (i) and max.exp.ant AG1 (j) 3. Obtain reported SAR for each external radio, denoted as reported.exp.NFC and reported.exp.BT 4. Demonstrate that the sum of these exposures meets: max.exp.ant AG0 (i) + max.exp.ant AG1 (j) + reported.exp.NFC + reported.exp.BT ≤ 1.6 W/kg for 1g and 4 W/kg for 10g ii) SPLSR …

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