1. FCC ID
  2. XD6
  3. XD6B331MA

FCC ID XD6B331MA

Mobile Hotspot

by Shenzhen Tinno Mobile Technology Corp

Grantee Code: XD6   Product Code: B331MA
Latest application date: 2025-07-15

FCC ID Device Details

FCC IDXD6B331MA
Mirrorsfcc.id | gov | fccid.ai
Grantee CodeXD6
Product CodeB331MA
Applicant BusinessShenzhen Tinno Mobile Technology Corp 🇨🇳
Related Domains tinno.com
Equipment ClassMobile Hotspot
Test FirmTelecommunication Technology Labs, CAICT

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
701.5-713.5 MHzOriginal Equipment2025-07-15
869-894 MHzOriginal Equipment2025-07-15
5180-5240 MHzOriginal Equipment2025-07-15
2412-2462 MHzOriginal Equipment2025-07-15

Exhibits

DocumentTypeAvailableFile
TempConfidential_ATT_Quatro_SIG_EN_V2_250708Users Manual2026-01-12PDF 76.8 KB
TempConfidential_ATT_Quatro_UG_EN_V2b_250711Users Manual2026-01-12PDF 4 MB
TempConfidential_InternalInternal Photos2026-01-12PDF 1 MB
TempConfidential_ExternalExternal Photos2026-01-12PDF 2.1 MB
B331MA label locationID Label/Location Info2025-07-15PDF 162.5 KB
B331MC label locationID Label/Location Info2025-07-15PDF 166 KB
TempConfidential_Test Setup PhotosTest Setup Photos2026-01-12PDF 1.2 MB
TempConfidential_The Photos of SAR test 25T04Z100997_004Test Setup Photos2026-01-12PDF 2.3 MB
25T04Z100997-001_FCC_Report_WLAN_2.4G_Rev0Test Report2025-07-15PDF 1.7 MB
25T04Z100997-002_FCC_Report_WLAN 5.0G_Rev0Test Report2025-07-15PDF 3.6 MB
25T04Z100997-003_FCC_Report_WLAN 5.8G_Rev1Test Report2025-07-15PDF 3.2 MB
25T04Z100997-005 FCC 15B Rev0 r1Test Report2025-07-15PDF 1.4 MB
25T04Z100997-009-WCDMATest Report2025-07-15PDF 3.5 MB
25T04Z100997-010-LTE Part1Test Report2025-07-15PDF 3.6 MB
25T04Z100997-010-LTE Part2Test Report2025-07-15PDF 2.3 MB
25T04Z100997-011-NR Part1Test Report2025-07-15PDF 5.1 MB
25T04Z100997-011-NR Part2Test Report2025-07-15PDF 4.3 MB
B331_Antenna_specifications_20250714Test Report2025-07-15PDF 1.7 MB
7.ACB-FORM-FCC-Application-Letters Rev 17 R2 - U.S. Agent Letter for Service ofAttestation Statements2025-07-15PDF 247.9 KB
ACB-FORM-FCC-Application-Letters-Covered-List-AttestationAttestation Statements2025-07-15PDF 203 KB
B331MA-Covered-List-Attestation statement for Kaspersky softwareAttestation Statements2025-07-15PDF 153.1 KB
ACB-FORM-FCC-Application-Letters-Agency-LetterCover Letter(s)2025-07-15PDF 179.9 KB
ACB-FORM-FCC-Application-Letters-Confidentiality-LetterCover Letter(s)2025-07-15PDF 180.2 KB
B331MA MC Product Change Description_VariantCover Letter(s)2025-07-15PDF 135.6 KB
Declaration of Frequency StabilityCover Letter(s)2025-07-15PDF 186.1 KB
25T04Z100997_004_SAR_Rev1RF Exposure Info2025-07-15PDF 2.2 MB
ANNEX-25T04Z100997_004 Part1RF Exposure Info2025-07-15PDF 5.4 MB
ANNEX-25T04Z100997_004 Part2RF Exposure Info2025-07-15PDF 5.6 MB
Confidential_B331MA_MIFI_Block diagram_V0.2_20250714 Metadata onlyBlock DiagramPDF 206.9 KB
Confidential_B331MA_ATT_MB_V1.0_20250714 Metadata onlySchematicsPDF 679.4 KB
Confidential_B331MA_SUB_V1D0_20250429_1755 Metadata onlySchematicsPDF 57.1 KB
B331MA SAR Principle Metadata onlyOperational DescriptionPDF 109.6 KB
Confidential_B331MA Antenna gain 20250603 Metadata onlyOperational DescriptionPDF 236.2 KB
Confidential_B331MA Operation description_20250715 Metadata onlyOperational DescriptionPDF 888.1 KB
B331MA B331MC_Device SW security statement letter-SW-0714 Metadata onlySDR Software/Security Info.PDF 193 KB
Confidential_B331MA MC-EBOM-Main-PCB Metadata onlyParts List/Tune Up InfoPDF 261.4 KB
Confidential_B331MA MC_SUB_PCB Metadata onlyParts List/Tune Up InfoPDF 77 KB
Confidential_B331MA_Tune-up__2025070802 Metadata onlyParts List/Tune Up InfoPDF 380.2 KB

Application Information

Application IDr8byEwqKchV52PQp9DjSgw==
Final Action Date2025-07-15
Application PurposeOriginal Equipment
Applicant FRN0018783100
ModelB331MA
Equipment ClassJBP - Part 15 Class B Computing Device Peripheral
Device DescriptionMobile Hotspot
Responsible Partyxiaoping LI, Manager, xiaoping.li@tinno.com , (86) 755-86095550
AgentBo Bo Bo, CTTL, Telecommunication Technology Labs, CAICT, libo@caict.ac.cn , 86-10-62304633-2513
Technical ContactXue Zhen, CTTL, Telecommunication Technology Labs, CAICT, xuezhen@caict.ac.cn , 86-10-62304633
Test FirmJiyang Zhu, Telecommunication Technology Labs, CAICT, zhujiyang@caict.ac.cn , 008601062305048
TCB Emailhotline@acbcert.com
TCB ScopeA1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices
Short-Term ConfidentialityYes
Short-Term Confidentiality Date01/12/2026
Long-Term ConfidentialityYes
Grant DeferralNo
Modular EquipmentDoes not apply
Composite DeviceYes
Composite PartNo
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo
Grant CommentsThis device contains 2.4GHz WLAN, 5GHz WLAN and WCDMA/LTE/5G NR transmitters.

Applications

Application IDDatePurpose
r8byEwqKchV52PQp9DjSgw==2025-07-15Original Equipment
oSCewJVSjXqZaV18qrIfsA==2025-07-15Original Equipment
Y0LliyAgycvJFl8M7PylKQ==2025-07-15Original Equipment
2v9a+V055O4G2D1UARfRxw==2025-07-15Original Equipment
+mkFXC1NhnsTe53ejSDW3Q==2025-07-15Original Equipment

Equipment Authorization

FrequencyOutputToleranceGrant Notes
CC
701.5-713.5 MHz0.10.1ppm
704-711 MHz0.1180.1ppm
704-711 MHz0.09680.1ppm
717-728 MHzCC
729-746 MHzCC
758-768 MHzCC
790.5-795.5 MHz0.09180.1ppm
790.5-795.5 MHz0.10230.1ppm
790.5-795.5 MHz0.08150.1ppm
793 MHz0.10350.1ppm
793 MHz0.08870.1ppm
793 MHz0.09770.1ppm
793 MHz0.07830.1ppm
825.5-847.5 MHz0.09980.1ppm
826.5-846.5 MHz0.08470.1ppm
829-844 MHz0.08340.1ppm
829-844 MHz0.08110.1ppm
829-844 MHz0.09860.1ppm
834-839 MHz0.10120.1ppm
836.5 MHz0.10020.1ppm
836.5 MHz0.07690.1ppm
869-894 MHzCC
1715-1775 MHz0.20650.1ppm
1720-1770 MHz0.20230.1ppm
1720-1770 MHz0.16870.1ppm
1725-1765 MHz0.19770.1ppm
1732.5-1757.5 MHz0.19680.1ppm
1732.5-1757.5 MHz0.15810.1ppm
1860-1900 MHz0.13870.1ppm
1865-1895 MHz0.17180.1ppm
1870-1890 MHz0.17020.1ppm
1870-1890 MHz0.14090.1ppm
2307.5-2312.5 MHz0.19540.1ppm
2307.5-2312.5 MHz0.18490.1ppm
2310 MHz0.19280.1ppm
2310 MHz0.16140.1ppm
2310 MHz0.17910.1ppm
2310 MHz0.14690.1ppm
2412-2462 MHz0.3273000CC
2505-2565 MHz0.19950.1ppm
2510-2560 MHz0.23390.1ppm
2510-2560 MHz0.1950.1ppm
3457.5-3542.49 MHz0.27730.1ppm
3465-3534.99 MHz0.22130.1ppm
3500.01 MHz0.25290.1ppm
3500.01 MHz0.20.1ppm
3745.02-3934.98 MHz0.30550.1ppm
3745.02-3934.98 MHz0.2410.1ppm
3750-3930 MHz0.29920.1ppm
3750-3930 MHz0.23660.1ppm
5180-5240 MHz0.0755CC
5745-5825 MHz0.0807CC

Grants

TCB Grant - Application Y0LliyAgycvJFl8M7PylKQ==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  ACB, Inc.
313 Park Avenue Suite 300
Falls Church, VA 22046
Date of Grant: 07/15/2025

Application Dated: 07/15/2025
Shenzhen Tinno Mobile Technology Corp
27-001, South side of Tianlong mobile HQ Building,
Tongfa South Road, Xili Street, Nanshan District
Shenzhen,Guangdong Province, 518000
China
 
Attention: xiaoping LI , Manager

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  XD6B331MA
Name of Grantee:  Shenzhen Tinno Mobile Technology Corp
Equipment Class: Communications Rcvr for use w/ licensed Tx and CBs
Notes: Mobile Hotspot
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15B 869.0  -  894.0
CC 15B 729.0  -  746.0
CC 15B 758.0  -  768.0
CC 15B 717.0  -  728.0

This device contains 2.4GHz WLAN, 5GHz WLAN and WCDMA/LTE/5G NR transmitters.

CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application r8byEwqKchV52PQp9DjSgw==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  ACB, Inc.
313 Park Avenue Suite 300
Falls Church, VA 22046
Date of Grant: 07/15/2025

Application Dated: 07/15/2025
Shenzhen Tinno Mobile Technology Corp
27-001, South side of Tianlong mobile HQ Building,
Tongfa South Road, Xili Street, Nanshan District
Shenzhen,Guangdong Province, 518000
China
 
Attention: xiaoping LI , Manager

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  XD6B331MA
Name of Grantee:  Shenzhen Tinno Mobile Technology Corp
Equipment Class: Part 15 Class B Computing Device Peripheral
Notes: Mobile Hotspot
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15B  - 

This device contains 2.4GHz WLAN, 5GHz WLAN and WCDMA/LTE/5G NR transmitters.

CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application oSCewJVSjXqZaV18qrIfsA==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  ACB, Inc.
313 Park Avenue Suite 300
Falls Church, VA 22046
Date of Grant: 07/15/2025

Application Dated: 07/15/2025
Shenzhen Tinno Mobile Technology Corp
27-001, South side of Tianlong mobile HQ Building,
Tongfa South Road, Xili Street, Nanshan District
Shenzhen,Guangdong Province, 518000
China
 
Attention: xiaoping LI , Manager

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  XD6B331MA
Name of Grantee:  Shenzhen Tinno Mobile Technology Corp
Equipment Class: PCS Licensed Transmitter
Notes: Mobile Hotspot
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
24E 1852.4  -  1907.6 0.1786 0.1  PM 4M50F9W
22H 826.4  -  846.6 0.1156 0.1  PM 4M50F9W
27 1712.4  -  1752.6 0.1746 0.1  PM 4M50F9W
24E 1851.5  -  1908.5 0.1592 0.1  PM 2M68G7D
24E 1860.0  -  1900.0 0.1585 0.1  PM 17M9G7D
24E 1860.0  -  1900.0 0.1387 0.1  PM 17M9W7D
22H 825.5  -  847.5 0.0998 0.1  PM 2M68G7D
22H 829.0  -  844.0 0.0986 0.1  PM 9M00G7D
22H 826.5  -  846.5 0.0847 0.1  PM 4M48W7D
22H 829.0  -  844.0 0.0834 0.1  PM 8M95W7D
27 2510.0  -  2560.0 0.2339 0.1  PM 17M9G7D
27 2505.0  -  2565.0 0.1995 0.1  PM 9M00W7D
27 2510.0  -  2560.0 0.195 0.1  PM 17M9W7D
27 704.0  -  711.0 0.118 0.1  PM 8M95G7D
27 701.5  -  713.5 0.1 0.1  PM 4M45W7D
27 704.0  -  711.0 0.0968 0.1  PM 9M00W7D
90 793.0  -  793.0 0.1035 0.1  PM 8M90G7D
90 790.5  -  795.5 0.0918 0.1  PM 4M48W7D
90 793.0  -  793.0 0.0887 0.1  PM 8M95W7D
27 2307.5  -  2312.5 0.1954 0.1  PM 4M50G7D
27 2310.0  -  2310.0 0.1928 0.1  PM 9M00G7D
27 2310.0  -  2310.0 0.1614 0.1  PM 8M95W7D
27 1715.0  -  1775.0 0.2065 0.1  PM 9M00G7D
27 1720.0  -  1770.0 0.2023 0.1  PM 18M0G7D
27 1720.0  -  1770.0 0.1687 0.1  PM 17M9W7D
24E 1865.0  -  1895.0 0.1718 0.1  PM 28M6G7D
24E 1870.0  -  1890.0 0.1702 0.1  PM 38M8G7D
24E 1870.0  -  1890.0 0.1409 0.1  PM 38M9W7D
22H 834.0  -  839.0 0.1012 0.1  PM 18M0G7D
22H 836.5  -  836.5 0.1002 0.1  PM 23M0G7D
22H 829.0  -  844.0 0.0811 0.1  PM 9M00W7D
22H 836.5  -  836.5 0.0769 0.1  PM 22M9W7D
27 790.5  -  795.5 0.1023 0.1  PM 4M51G7D
27 793.0  -  793.0 0.0977 0.1  PM 9M04G7D
27 790.5  -  795.5 0.0815 0.1  PM 4M52W7D
27 793.0  -  793.0 0.0783 0.1  PM 9M00W7D
27 2307.5  -  2312.5 0.1849 0.1  PM 4M53G7D
27 2310.0  -  2310.0 0.1791 0.1  PM 9M02G7D
27 2310.0  -  2310.0 0.1469 0.1  PM 9M01W7D
27 1725.0  -  1765.0 0.1977 0.1  PM 28M7G7D
27 1732.5  -  1757.5 0.1968 0.1  PM 43M1G7D
27 1732.5  -  1757.5 0.1581 0.1  PM 43M2W7D
27 3457.5  -  3542.49 0.2773 0.1  PM 13M0G7D
27 3500.01  -  3500.01 0.2529 0.1  PM 97M2G7D
27 3465.0  -  3534.99 0.2213 0.1  PM 26M9W7D
27 3500.01  -  3500.01 0.2 0.1  PM 96M9W7D
27 3745.02  -  3934.98 0.3055 0.1  PM 87M6G7D
27 3750.0  -  3930.0 0.2992 0.1  PM 97M1G7D
27 3745.02  -  3934.98 0.241 0.1  PM 87M4W7D
27 3750.0  -  3930.0 0.2366 0.1  PM 96M9W7D

Power output is ERP for Part 22/27/90 and EIRP for Part 24/27. Body-worn operations are restricted to belt-clips, holsters or similar accessories that have no metallic component in the assembly and which provide at least 5 mm separation between the device and the users body. End users must be informed of the body worn requirements for satisfying RF Exposure compliance. The highest reported SAR for body-worn accessory, product specific (wireless router) and simultaneous transmission exposure conditions are 1.19 W/kg, 1.06 W/kg and 1.55 W/kg, respectively.

This device contains LTE functions that are not operational in U.S. Territories. This filing is only applicable for 700 MHz MBS, 850 MHz Cell, 1700 MHz AWS, 1900 MHz PCS, 2300 MHz WCS, and 2600 MHz IMT operations.

This device has 1.4/3/5/10/15/20 MHz bandwidth modes for LTE Band 2/4/66; 1.4/3/5/10 MHz bandwidth modes for LTE Bands 5/12; 5/10/15/20 MHz bandwidth modes for LTE Band 7 and 5/10 MHz bandwidth modes for LTE Band 14/30.

This device also has 5/10 MHz bandwidth modes for 5G NR n14/n30; 5/10/15/20/25 MHz bandwidth modes for 5G NR n5; 5/10/15/20/25/30/35/40 MHz bandwidth modes for 5G NR n2; 5/10/15/20/25/30/35/40/45 MHz bandwidth modes for 5G NR n66 and 10/15/20/25/30/40/50/60/70/80/90/100 MHz bandwidth modes for 5G NR n77L/n77H;

Certification for 3GPP 5G NR band n77 operations is limited to the 3.7GHz segment under §27.5(m) and 3.45GHz segment under §27.5(o).

This device supports SA and NSA modes for 5G NR technology and it also contains 2.4GHz WLAN and 5GHz WLAN transmitters.


TCB Grant - Application 2v9a+V055O4G2D1UARfRxw==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  ACB, Inc.
313 Park Avenue Suite 300
Falls Church, VA 22046
Date of Grant: 07/15/2025

Application Dated: 07/15/2025
Shenzhen Tinno Mobile Technology Corp
27-001, South side of Tianlong mobile HQ Building,
Tongfa South Road, Xili Street, Nanshan District
Shenzhen,Guangdong Province, 518000
China
 
Attention: xiaoping LI , Manager

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  XD6B331MA
Name of Grantee:  Shenzhen Tinno Mobile Technology Corp
Equipment Class: Unlicensed National Information Infrastructure TX
Notes: Mobile Hotspot
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15E 5180.0  -  5240.0 0.0755  
CC 15E 5745.0  -  5825.0 0.0807  

Power output is conducted. Body-worn operations are restricted to belt-clips, holsters or similar accessories that have no metallic component in the assembly and which provide at least 5 mm separation between the device and the users body. End users must be informed of the body worn requirements for satisfying RF Exposure compliance. The highest reported SAR for product specific (wireless router) and simultaneous transmission exposure conditions are 0.48 W/kg and 1.55 W/kg, respectively.

This device supports 20 MHz, 40 MHz and 80 MHz BW modes in 5G WLAN transmitter and it also contains 2.4GHz WLAN and WCDMA/LTE/5G NR transmitters.


CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application +mkFXC1NhnsTe53ejSDW3Q==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  ACB, Inc.
313 Park Avenue Suite 300
Falls Church, VA 22046
Date of Grant: 07/15/2025

Application Dated: 07/15/2025
Shenzhen Tinno Mobile Technology Corp
27-001, South side of Tianlong mobile HQ Building,
Tongfa South Road, Xili Street, Nanshan District
Shenzhen,Guangdong Province, 518000
China
 
Attention: xiaoping LI , Manager

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  XD6B331MA
Name of Grantee:  Shenzhen Tinno Mobile Technology Corp
Equipment Class: Digital Transmission System
Notes: Mobile Hotspot
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15C 2412.0  -  2462.0 0.3273  

Power output is conducted. Body-worn operations are restricted to belt-clips, holsters or similar accessories that have no metallic component in the assembly and which provide at least 5 mm separation between the device and the users body. End users must be informed of the body worn requirements for satisfying RF Exposure compliance. The highest reported SAR for product specific (wireless router) and simultaneous transmission exposure conditions are 0.38 W/kg and 1.55 W/kg, respectively.

This device only supports 20 MHz BW modes in 2.4G WLAN transmitter and it also contains 5GHz WLAN and WCDMA/LTE/5G NR transmitters.


CC: This device is certified pursuant to two different Part 15 rules sections.