FCC RF Test Report (WCDMA)

Report No.: JYTSZ-R12-2400409

General Information

Client Information

Applicant:	INFINIX MOBILITY LIMITED
Address of Applicant:	FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG
Manufacturer:	INFINIX MOBILITY LIMITED
Factory:	SHENZHEN TECNO TECHNOLOGY CO., LTD. 101, Building 24, Waijing Industrial Park, Fumin Community, Fucheng Street, Longhua District, Shenzhen City, P.R.China

General Description of E.U.T.

Product Name:	Mobile Phone
Model No.:	X6838
Operation Frequency Range:	WCDMA band II: 1852.4 MHz - 1907.6 MHz WCDMA band IV: 1712.4 MHz - 1752.6 MHz WCDMA band V: 826.4 MHz - 846.6 MHz
Modulation Type:	WCDMA band II: RMC(QPSK), HSUPA(QPSK) WCDMA band IV: HSDPA(QPSK,16QAM)
Antenna Type:	Internal Antenna
Antenna Gain:	WCDMA band II: ANT0: -2.07dBi, ANT4: -2.1 dBi WCDMA band IV: ANT0: -2.07 dBi, ANT4: -0.67 dBi WCDMA band V: ANT0: -5.38 dBi, ANT4: -5.97dBi
Power Supply:	Rechargeable Li-ion Polymer Battery DC3.85V, 4900mAh
AC Adapter:	Model: U180XSA Input: AC100-240V, 50/60Hz, 0.6A Output: DC 5.0V, 2.4A or 7.5V, 2.4A 18.0W MAX
Test Sample Condition:	The test samples were provided in good working order with no visible defects.

Test Mode and Environment

Test Mode:	RMC mode: Keep the EUT communication with simulated station in RMC mode HSDPA mode: Keep the EUT communication with simulated station in HSDPA mode HSUPA mode: Keep the EUT communication with simulated station in HSUPA mode
Remark:	1. The EUT has been tested under continuous transmitting mode. Channel Low, Mid and High for each type band with rated data rate were chosen for full testing. The field strength of spurious radiation emission was measured as EUT stand-up position (H mode) and lie down position (E1, E2 mode) for these modes. Just the worst case position (H mode) shown in report. 2. During the use of EUT, the transmitting antenna is automatically selected according to the condition of the signal, ANT0 is the default. When the signal condition of ANT4 antenna is better than ANT0, it will switch from ANT0 to ANT4 transmission. The fixed antenna is launched during the test to verify that it meets the test requirements.
Operating Environment:	Temperature: Normal: 15℃ ~ 35℃, Extreme: -30°C ~ +50℃ Humidity: 20%~75% RH Atmospheric Pressure: 1008 mbar Voltage: Nominal: 3.85 Vdc, Extreme: Low 3.00 Vdc, High 4.40 Vdc
Test Engineer:	Toby Huang (Conducted measurement) Kiran Zeng (Radiated measurement)

Measurement Uncertainty

Parameter	Expanded Uncertainty (Confidence of 95%(U = 2Uc(y)))
Radiated Emission (30MHz ~ 200MHz) (3m SAC)	4.6 dB
Radiated Emission (200MHz ~ 1000MHz) (3m SAC)	5.8 dB
Radiated Emission (1GHz ~ 6GHz) (3m FAR)	4.95 dB
Radiated Emission (6GHz ~ 18GHz) (3m FAR)	5.23 dB
Radiated Emission (18GHz ~ 40GHz) (3m FAR)	5.32 dB

Note: All the measurement uncertainty value were shown with a coverage k=2 to indicate 95% level of confidence. The measurement data show herein meets or exceeds the CISPR measurement uncertainty values specified in CISPR 16-4-2 and can be compared directly to specified limit to determine compliance.

Additions to, Deviations, or Exclusions from the Method

Laboratory Facility

The test facility is recognized, certified, or accredited by the following organizations:

FCC - Designation No.: CN1211. JianYan Testing Group Shenzhen Co., Ltd. has been accredited as a testing laboratory by FCC (Federal Communications Commission). The test firm Registration No. is 727551.
ISED - CAB identifier.: CN0021. The 3m Semi-anechoic chamber and 10m Semi-anechoic chamber of JianYan Testing Group Shenzhen Co., Ltd. has been Registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 10106A-1.
CNAS - Registration No.: CNAS L15527. JianYan Testing Group Shenzhen Co., Ltd. is accredited to ISO/IEC 17025:2017 General Requirements for the Competence of Testing and Calibration laboratories for the competence of testing. The Registration No. is CNAS L15527.
A2LA - Registration No.: 4346.01. This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. The test scope can be found as below link: https://portal.a2la.org/scopepdf/4346-01.pdf

Laboratory Location

JianYan Testing Group Shenzhen Co., Ltd.
Address: No.101, Building 8, Innovation Wisdom Port, No.155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, People's Republic of China.
Tel: +86-755-23118282, Fax: +86-755-23116366
Email: info-JYTee@lets.com, Website: http://jyt.lets.com

Measurement Setup and Procedure

Test Channel

WCDMA band II

Channel No.	Frequency (MHz)	Channel No.	Frequency (MHz)	Channel No.	Frequency (MHz)
9262	1852.4	9400	1880.0	9538	1907.6

WCDMA band IV

Channel No.	Frequency (MHz)	Channel No.	Frequency (MHz)	Channel No.	Frequency (MHz)
1312	1712.4	1413	1732.6	1513	1752.6

WCDMA band V

Channel No.	Frequency (MHz)	Channel No.	Frequency (MHz)	Channel No.	Frequency (MHz)
4132	826.4	4183	836.6	4233	846.6

Test Setup

Radiated emission measurement:

Below 1GHz (3m SAC): The test setup involves the Equipment Under Test (EUT) placed on a turntable in a 3-meter Semi-Anechoic Chamber (SAC). A receiving antenna is positioned at a 3-meter distance. The setup includes a turntable, ground reference plane, pre-amplifier, test receiver, and controller, connected via coaxial and optical cables.
Above 1GHz (3m FAR): The test setup is similar to the below 1GHz setup but conducted in a 3-meter Fully Anechoic Room (FAR). It includes the EUT on a turntable, a receiving antenna at 3 meters, a ground reference plane, pre-amplifier, test receiver, and controller, connected via coaxial and optical cables.

Conducted test method: The EUT is connected to a simulated station via an RF cable. The setup includes the EUT, a simulated station, spectrum analyzer, RF control unit, band reject filter group, and power distribution unit (PDU), potentially within a temperature and humidity chamber.

Test Procedure

Radiated emission:

For below 1GHz: The EUT was placed on the table top of a rotating table 0.8 m from the ground at a 3 m semi anechoic chamber. The measurement distance from the EUT to the receiving antenna is 3 m. The EUT works in each mode of operation that needs to be tested, and having the EUT continuously working, respectively on 3 axis (X, Y & Z) and considered typical configuration to obtain worst position. The highest signal levels relative to the limit shall be determined by rotating the EUT from 0° to 360° and with varying the measurement antenna height between 1 m and 4 m in vertical and horizontal polarizations. Open the test software to control the test antenna and test turntable. Perform the test, save the test results, and export the test data.
For above 1GHz: The EUT was placed on the table top of a rotating table 1.5 m from the ground at a 3 m fully anechoic room. The measurement distance from the EUT to the receiving antenna is 3 m. The EUT works in each mode of operation that needs to be tested, and having the EUT continuously working, respectively on 3 axis (X, Y & Z) and considered typical configuration to obtain worst position. The highest signal levels relative to the limit shall be determined by rotating the EUT from 0° to 360° and with varying the measurement antenna height between 1 m and 4 m in vertical and horizontal polarizations. Open the test software to control the test antenna and test turntable. Perform the test, save the test results, and export the test data.

Conducted test method:

The WCDMA antenna port of EUT was connected to the test port of the test system through an RF cable.
The EUT is keeping in continuous transmission mode and tested in all modulation modes.
Open the test software, prepare a test plan, and control the system through the software. After the test is completed, the test report is exported through the test software.

Test Results

Summary

Clause and Data Summary

Test items	Standard clause	Test data	Result
RF Exposure (SAR)	Part 1.1307 Part 2.1093	See SAR Report	Pass
RF Output Power	Part 2.1046 Part 22.913 (a)(5) Part 24.232 (c) Part 27.50 (d)(4)	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass
Peak-to-Average Power Ratio	Part 24.232 (d) Part 27.50(d)(5)	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass
Modulation Characteristics	Part 2.1047	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass
26dB Emission Bandwidth 99% Occupied Bandwidth	Part 2.1049	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass
Out of Band Emission at Antenna Terminals	Part 2.1051 Part 22.917 (a) Part 24.238 (a) Part 27.53(h)	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass
Field Strength of Spurious Radiation	Part 2.1053 Part 22.917 (a) Part 24.238 (a) Part 27.53(h)	See Section 5.2	Pass
Frequency Stability vs. Temperature	Part 22.355 Part 24.235 Part 27.54 Part 2.1055(a)(1)(b)	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass
Frequency Stability vs. Voltage	Part 22.355 Part 24.235 Part 27.54 Part 2.1055(d)(2)	Appendix - WCDMA ANTO Appendix - WCDMA ANT4	Pass

Remark:

1. Pass: The EUT complies with the essential requirements in the standard.
2. The cable insertion loss used by "RF Output Power" and other conduction measurement items is 0.5dB (Fundamental Frequency below 1GHz)/1.0dB (Fundamental Frequency above 1GHz) (provided by the customer).

Test Method: ANSI/TIA-603-E-2016, ANSI C63.26-2015

Test Limit

Test items

Limit

RF Output Power

WCDMA band II: 2W EIRP
WCDMA band IV: 1W EIRP
WCDMA band V: 7W ERP

Peak-to-Average Power Ratio

The peak-to-average ratio (PAR) of the transmission may not exceed 13 dB

Modulation Characteristics

N/A

26dB Emission Bandwidth
99% Occupied Bandwidth

N/A

Out of Band Emission at Antenna Terminals

The power of any emission outside of the authorized operating frequency ranges must be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log(P) dB.

Field Strength of Spurious Radiation

WCDMA band II:
The frequency stability shall be sufficient to ensure that the fundamental emission stays within the authorized frequency block.
WCDMA band IV:
The frequency stability shall be sufficient to ensure that the fundamental emissions stay within the authorized bands of operation.
WCDMA band V:
Except as otherwise provided in this part, the carrier frequency of each transmitter in the Public Mobile Services must be maintained within the tolerances given in Table C-1 of this section.

Frequency Stability vs. Temperature
Frequency Stability vs. Voltage

TABLE C-1-FREQUENCY TOLERANCE FOR TRANSMITTERS IN THE PUBLIC MOBILE SERVICES

Frequency range (MHz)	Mobile ≤3 watts (ppm)	Mobile >3 watts (ppm)	Base, fixed (ppm)
25 to 50	20.0	20.0	50.0
50 to 450	5.0	5.0	50.0
450 to 512	2.5	5.0	5.0
821 to 896 928 to 929 929 to 960	1.5	2.5	2.5
2110 to 2220	5.0	n/a	n/a
10.0	n/a	n/a
n/a	n/a	n/a

Field Strength of Spurious Radiation Measurement

ANT0:

WCDMA band II

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3704.80	-60.61	-0.43	-61.04	-13.00	48.04	Vertical
5557.20	-64.54	4.18	-60.36	-13.00	47.36	Vertical
3704.80	-61.96	-0.23	-62.19	-13.00	49.19	Horizontal
5557.20	-65.12	4.10	-61.02	-13.00	48.02	Horizontal

Middle channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3760.00	-60.51	-1.01	-61.52	-13.00	48.52	Vertical
5640.00	-64.42	3.96	-60.46	-13.00	47.46	Vertical
3760.00	-62.27	-0.56	-62.83	-13.00	49.83	Horizontal
5640.00	-65.25	4.14	-61.11	-13.00	48.11	Horizontal

Highest channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3815.20	-60.78	-0.65	-61.43	-13.00	48.43	Vertical
5722.80	-64.05	3.42	-60.63	-13.00	47.63	Vertical
3815.20	-61.94	-0.14	-62.08	-13.00	49.08	Horizontal
5722.80	-65.38	3.81	-61.57	-13.00	48.57	Horizontal

Remark: 1. The emission levels of below 1 GHz are lower than the limit 10dB, so not show in test report.

WCDMA band IV

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3424.40	-59.48	-2.17	-61.65	-13.00	48.65	Vertical
5136.60	-65.03	3.77	-61.26	-13.00	48.26	Vertical
6848.80	-64.99	5.80	-59.19	-13.00	46.19	Vertical
3424.40	-61.91	-2.23	-64.14	-13.00	51.14	Horizontal
5136.60	-63.89	3.81	-60.08	-13.00	47.08	Horizontal
6848.80	-65.26	6.01	-59.25	-13.00	46.25	Horizontal

Middle channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3464.80	-59.34	-2.53	-61.87	-13.00	48.87	Vertical
5197.20	-64.81	3.26	-61.55	-13.00	48.55	Vertical
6929.60	-64.54	5.19	-59.35	-13.00	46.35	Vertical
3464.80	-62.13	-2.53	-64.66	-13.00	51.66	Horizontal
5197.20	-63.93	3.18	-60.75	-13.00	47.75	Horizontal
6929.60	-65.14	5.17	-59.97	-13.00	46.97	Horizontal

Highest channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3505.20	-59.77	-3.15	-62.92	-13.00	49.92	Vertical
5257.80	-64.85	3.11	-61.74	-13.00	48.74	Vertical
7010.40	-64.93	5.73	-59.20	-13.00	46.20	Vertical
3505.20	-61.81	-3.00	-64.81	-13.00	51.81	Horizontal
5257.80	-64.00	3.43	-60.57	-13.00	47.57	Horizontal
7010.40	-65.68	5.77	-59.91	-13.00	46.91	Horizontal

Remark: 1. The emission levels of below 1 GHz are lower than the limit 10dB, so not show in test report.

WCDMA band V

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
1652.80	-58.69	-11.40	-70.09	-13.00	57.09	Vertical
2479.20	-46.02	-8.68	-54.70	-13.00	41.70	Vertical
3305.60	-63.10	-3.76	-66.86	-13.00	53.86	Vertical
1652.80	-58.16	-10.77	-68.93	-13.00	55.93	Horizontal
2479.20	-50.69	-9.07	-59.76	-13.00	46.76	Horizontal
3305.60	-63.07	-3.86	-66.93	-13.00	53.93	Horizontal

Middle channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
1673.20	-58.67	-10.70	-69.37	-13.00	56.37	Vertical
2509.80	-46.12	-8.66	-54.78	-13.00	41.78	Vertical
3346.40	-62.97	-3.33	-66.30	-13.00	53.30	Vertical
1673.20	-57.70	-10.28	-67.98	-13.00	54.98	Horizontal
2509.80	-50.78	-8.73	-59.51	-13.00	46.51	Horizontal
3346.40	-63.08	-3.42	-66.50	-13.00	53.50	Horizontal

Highest channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
1697.60	-59.08	-9.90	-68.98	-13.00	55.98	Vertical
2546.40	-46.13	-8.40	-54.53	-13.00	41.53	Vertical
3395.20	-63.32	-2.55	-65.87	-13.00	52.87	Vertical
1697.60	-57.78	-9.70	-67.48	-13.00	54.48	Horizontal
2546.40	-50.36	-8.17	-58.53	-13.00	45.53	Horizontal
3395.20	-62.65	-2.62	-65.27	-13.00	52.27	Horizontal

Remark: 1. The emission levels of below 1 GHz are lower than the limit 10dB, so not show in test report.

WCDMA band II (ANT4)

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3704.80	-60.54	-0.43	-60.97	-13.00	47.97	Vertical
5557.20	-65.01	4.18	-60.83	-13.00	47.83	Vertical
3704.80	-61.73	-0.23	-61.96	-13.00	48.96	Horizontal
5557.20	-64.69	4.10	-60.59	-13.00	47.59	Horizontal

Middle channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3760.00	-60.74	-1.01	-61.75	-13.00	48.75	Vertical
5640.00	-64.70	3.96	-60.74	-13.00	47.74	Vertical
3760.00	-62.11	-0.56	-62.67	-13.00	49.67	Horizontal
5640.00	-65.72	4.14	-61.58	-13.00	48.58	Horizontal

Highest channel

Frequency (MHz)	Reading Level (dBm)	Factor (dB)	Level (dBm)	Limit (dBm)	Margin (dB)	Polarization
3815.20	-60.78	-0.65	-61.43	-13.00	48.43	Vertical
5722.80	-63.83	3.42	-60.41	-13.00	47.41	Vertical
3815.20	-61.82	-0.14	-61.96	-13.00	48.96	Horizontal
5722.80	-64.91	3.81	-61.10	-13.00	48.10	Horizontal

Remark: 1. The emission levels of below 1 GHz are lower than the limit 10dB, so not show in test report.

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FCC RF Test Report (WCDMA)

General Information

Client Information

General Description of E.U.T.

Test Mode and Environment

Measurement Uncertainty

Additions to, Deviations, or Exclusions from the Method

Laboratory Facility

Laboratory Location

Measurement Setup and Procedure

Test Channel

WCDMA band II

WCDMA band IV

WCDMA band V

Test Setup

Test Procedure

Test Results

Summary

Clause and Data Summary

Test Limit

Field Strength of Spurious Radiation Measurement

ANT0:

WCDMA band II

Middle channel

Highest channel

WCDMA band IV

Middle channel

Highest channel

WCDMA band V

Middle channel

Highest channel

WCDMA band II (ANT4)

Middle channel

Highest channel

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