2AUWK-TANKXMOBILE PHONE

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Mdc Corp 2020-09-11 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD FCC ID: 2AUWK-TANKX To Whom It May Concern: This letter is to ascertain that Mdc Corp Product MOBILE PHONE has been the units used for conducting FCC compliance testing, the sDoC part will be tested by FCC accredited test lab. The result shows that the EUT has complied to unintentional Radiators requirements (15.101). Test lab information: FCC-Registration No.: 645098 Shenzhen Tongce Testing Lab. Adress: 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China If you have any question or concerns, pls. contact us. Sincerely, (signed) Name / Title: Ana Lusia Marmol /General Manger Company: Mdc Corp Address: 2920 nw 72 ave, Miami, Florida 33122, United States Phone: +1(305)7246834 Fax: +1(305)7246834 Email: [email protected]

Mdc Corp HEADQUARTERS: 914 WEST PATAPSCO AVENUE • BALTIMORE, MARYLAND 21230 • PHONE (410) 354-3300 • FAX (410) 354-3313 Agent Authorization Letter (2020-09-11) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen Tongce Testing Lab) 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, Name: Ana Lusia Marmol Date: 2020.09.11 Title: General Manger

Mdc Corp HEADQUARTERS: 914 WEST PATAPSCO AVENUE • BALTIMORE, MARYLAND 21230 • PHONE (410) 354-3300 • FAX (410) 354-3313 Long Term Confidentiality Request Letter (2020-09-11) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (MOBILE PHONE / Tank X / FCC ID: 2AUWK- TANKX) 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  BOM 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, Name: Ana Lusia Marmol Date: 2020.09.11 Title: General Manger

Page 1 of 5 Appendix B: Photographs of EUT Product: MOBILE PHONE Model: Tank X External Photos Page 2 of 5 Page 3 of 5 Page 4 of 5 Page 5 of 5

Label Artwork and Location Model: Tank X Label: Size: L*W=21.5*22mm Location

Page 1 of 6 Appendix B: Photographs of EUT Product: MOBILE PHONE Model: Tank X Internal Photos Page 2 of 6 Page 3 of 6 2G Antenna BT Antenna Page 4 of 6 Page 5 of 6 Page 6 of 6

Page 1 of 5 Appendix B: Photographs of EUT FCC ID: 2AUWK-TANKX Product: MOBILE PHONE Model: Tank X Test Setup Photos Right Cheek Right Tilted Page 2 of 5 Left Cheek Left Tilted Page 3 of 5 Body worn – Front (10mm) Body worn – Back (10mm) Page 4 of 5 Body worn – Left (10mm) Body worn – Right (10mm) Page 5 of 5 Body worn – Bottom (10mm)

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com SAR TEST REPORT FCC ID: 2AUWK-TANKX Product: MOBILE PHONE Model No.: Tank X Additional Model: N/A Trade Mark: CELLSTAR Report No.: TCT200817E017 Issued Date: Sep. 09, 2020 Issued for: Mdc Corp 2920 nw 72 ave, Miami, FL 33122 United States Issued By: Shenzhen Tongce Testing Lab. 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China TEL: +86-755-27673339 FAX: +86-755-27673332 Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Tongce Testing Lab.. This document may be altered or revised by Shenzhen Tongce Testing Lab. personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT200817E017 Page 2 of 96 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TABLE OF CONTENTS 1. Test Certification ........................................................................................................................................................ 3 2. Facilities and Accreditations ..................................................................................................................................... 4 2.1. Facilities ............................................................................................................................................................. 4 2.2. Location ............................................................................................................................................................. 4 2.3. Environment Condition: ................................................................................................................................... 4 3. Test Result Summary ................................................................................................................................................. 5 4. EUT Description .......................................................................................................................................................... 6 5. RF Exposure Limit ...................................................................................................................................................... 7 6. SAR Measurement System Configuration ................................................................................................................ 8 6.1. SAR Measurement Set-up ................................................................................................................................ 8 6.2. E-field Probe ...................................................................................................................................................... 9 6.3. Phantom ............................................................................................................................................................. 9 6.4. Device Holder .................................................................................................................................................. 10 6.5. Data Storage and Evaluation .......................................................................................................................... 11 6.6. Position of the wireless device in relation to the phantom ......................................................................... 12 6.7. Tissue Dielectric Parameters ......................................................................................................................... 15 6.8. Tissue-equivalent Liquid Properties ............................................................................................................. 16 6.9. System Check .................................................................................................................................................. 17 7. Measurement Procedure .......................................................................................................................................... 18 8. Conducted Output Power ........................................................................................................................................ 21 9. Exposure Position Consideration ........................................................................................................................... 24 9.1. EUT Antenna Location .................................................................................................................................... 24 9.2. Test Position Consideration ........................................................................................................................... 24 10. SAR Test Results Summary .................................................................................................................................... 25 10.1. Head 1g SAR Data ........................................................................................................................................... 25 10.2. Body-Worn 1g SAR Data ................................................................................................................................ 26 10.3. Simultaneous Transmission Conclusion ...................................................................................................... 27 10.4. SAR Simultaneous Transmission Analysis .................................................................................................. 28 10.5. Measurement Uncertainty (450MHz-3GHz) ................................................................................................... 29 10.6. Test Equipment List ........................................................................................................................................ 31 11. System Check Results ...............................................................................…

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Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID: 2AUWK-TANKX Product: MOBILE PHONE Model No.: Tank X Additional Model No.: N/A Trade Mark: CELLSTAR Report No.: TCT200817E054 Issued Date: Sep. 08, 2020 Issued for: Mdc Corp 2920 nw 72 ave, Miami, Florida 33122, United States Issued By: Shenzhen Tongce Testing Lab. 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China TEL: +86-755-27673339 FAX: +86-755-27673332 Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Tongce Testing Lab. This document may be altered or revised by Shenzhen Tongce Testing Lab. personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT200817E054 Page 2 of 43 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TABLE OF CONTENTS 1. Test Certification....................................................................................... 3 2. Test Result Summary ............................................................................... 4 3. EUT Description ........................................................................................ 5 4. General Information .................................................................................. 5 4.1. Test environment and mode ................................................................................. 6 4.2. Test Mode ............................................................................................................... 8 4.3. Description of Support Units ................................................................................ 9 4.4. Configuration of Tested System ........................................................................ 10 4.5. Measurement Results Explanation Example ..................................................... 10 5. Facilities and Accreditations ................................................................. 11 5.1. Facilities ............................................................................................................... 11 5.2. Location ............................................................................................................... 11 5.3. Measurement Uncertainty ................................................................................... 11 6. Test Results and Measurement Data .................................................... 12 6.1. Conducted Output Power Measurement ........................................................... 12 6.2. Peak to Average Ratio ......................................................................................... 14 6.3. 99% Occupied Bandwidth and 26dB Bandwidth Measurement ...................... 18 6.4. Band Edge and Conducted Spurious Emission Measurement ....................... 22 6.5. Effective Radiated Power and Effective Isotropic Radiated Power Measurement .............................................................................................................. 27 6.6. Field Strength of Spurious Radiation Measurement ........................................ 33 6.7. Frequency Stability Measurement ..................................................................... 39 Appendix A: Photographs of Test Setup Appendix B: Photographs of EUT Report No.: TCT200817E054 Page 3 of 43 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. Test Certification Product: MOBILE PHONE Model No.: Tank X Additional Model No.: N/A Trade Mark: CELLSTAR Applicant: Mdc Corp Address: 2920 nw 72 ave, Miami, Florida 33122, United States Manufacturer: Mdc Corp Address: 2920 nw 72 ave, Miami, Florida 33122, United States Date of Test: Aug. 18, 2020 – Sep. 07, 2020 Applicable Standards: FCC CFR Title 47 Part 2 FCC CFR Title 47 Part22 FCC CFR Title 47 Part24 FCC CFR Title 47 Part27 The above equipment has been tested by Shenzhen Tongce Testing Lab. and found compliance with the requirements set forth in the technical standards mentioned above. The results of testing in this report apply only to the product/system, which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Tested By: Date: Sep. 07, 2020 Rleo Reviewed By: Date: Sep. 08, 2020 Beryl Zhao Approved By: Date: Sep. 08, 2020 Tomsin Report No.: TCT200817E054 Page 4 of 43 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2. Test Result Summary Requirement CFR 47 Section Result Conducted Output Power §22.913; §2.1046 §24.232; §27.50(d) PASS Peak-to-Average Ratio §2.1046; §24.232(d) §22.913; §27.50(d) PASS Effective Radiated Power §2.1046; §22.913(a) §24.232; §27.50(d) PASS Equivalent Isotropic Radiated Power §2.1046; §22.913(a) §24.232; §27.50(d) PASS Occupied Bandwidth §2.1049 PASS Band Edge §2.1051 §22.917(a) §24.238(a) §27.53(g) PASS Conducted Spurious Emission §2.1051; §22.917 §24.238; §27.53(h) PASS Field Strength of Spurious Radiation §2.1053; §22.917(a) §24.238; §27.53(g) PASS Frequency Stability for Temperature & Voltage §2.1055;§22.355 §24.235; ;§27.54 PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Report No.: TCT200817E054 Page 5 of 43 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. EUT Description Product: MOBILE PHONE Model No.: Tank X Additional Model No.: N/A Trade Mark: CELLSTAR Tx Frequency: GSM/GPRS 850: 824.2MHz ~ 848.8MHz GSM/GPRS 1900: 1850.2MHz ~ 1909.8MHz Rx Frequency: GSM/GPRS 850: 869.2MHz ~ 893.8MHz GSM/GPRS 1900: 1930.2MHz ~ 1989.8MHz Maximum Output Power to Antenna: GSM850: 32.01dBm GSM1900: 28.43dBm GPRS850: 31.48dBm …

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Page 1 of 1 Appendix A: Photographs of Test Setup Product: MOBILE PHONE Model: Tank X Radiated Emission