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Appendix Docomo's Mobile data interconnectivity charge (Mbps unit charge-monthly) FY20 FY21 FY22 FY23 FY24 Fiscal Year FY18 FY19 Method Actual cost method New Future cost method MNOS are to disclose the charges for next three years based on their prediction about cost etc. Current ¥49,311 -6.0% YoY ¥42,702 -13.4% YoY ¥37,280 -12.7% YoY Old Announced in Mar. 2022 ¥20,327 -28.4% YoY ¥15,697 -22.8% YoY ¥13,207! -15.9% YoYi -8.4% compared to the previously announced Announced in Apr. 2021 To be fixed around late Dec. 2022 (scheduled): ¥28,385 -23.9% YoY -23.9% YoY -14.5% compared to the previously announced charge charge ¥22,190 -21.8% YoY -20.5% compared to the previously announced charge -12.9% compared to the previously announced charge ¥18.014 -18.8% YoY Announced in Mar. 2020 ¥49,311 -6.0% YoY ¥42,702 -13.4% YoY ¥41,436 -3.0% YoY ¥33,211 -19.8% YoY ¥27,924 -15.9% YoY! • • The same calculation method is applied to both the actual cost method and the future cost method: (Data communication cost + profit) /demand As for our FY20 usage charge(*), from 1Q20, we applied ¥41,436 per Mbps as a unit charge which was disclosed by Docomo based on the future cost method. This unit charge was revised and fixed at the end of Dec. 2021 as ¥37,280 which is a decrease of 12.7% from the previous year's charge. We recorded all impact generated from this revision in our 3Q21 financial results. The charge disclosed based on the future cost method is to be finalized based on MNOS actual cost results etc. FY21 charge of ¥28,385 is to be fixed around at the end of Dec. 2022. MNO is an abbreviation for Mobile Network Operator such as NTT Docomo. • Mobile interconnectivity charges, which are underlined above, had been fixed based on the results The YoY (Year over Year) decrease percentage written under each charge is compared with the previous year charge The charge is public information disclosed in NTT Docomo's service terms and conditions document uploaded on NTT Docomo's website (only available in Japanese) https://www.docomo.ne.jp/binary/pdf/corporate/disclosure/mvno/business/oroshi.pdf Internet Initiative Japan Inc. 28 28

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