[CLIFFORD CHANCE Execution version TELEFÓNICA INTERNACIONAL, S.A.U. AND CHINA NETCOM GROUP CORPORATION (BVI) LIMITED SUPPLEMENTAL AGREEMENT TO THE SHARE PURCHASE AGREEMENT FOR THE SALE AND PURCHASE OF SHARES IN CHINA UNICOM (HONG KONG) LIMITED THIS SUPPLEMENTAL AGREEMENT BETWEEN: (1) TELEFÓNICA INTERNACIONAL, S.A.U. Seller (2) CHINA NETCOM GROUP CORPORATION (BVI) LIMITED Buyer RECITALS: (A) Share Purchase Agreement (B) Reference is also] [Strictly Private and Confidential 18 July 2012 Our Ref: UCA-F-2012-0944 China Netcom Group Corporation (BVI) Limited c/o China Unicom (Hong Kong) Limited 75 th Floor, the Center, 99 Queen’s Road Central, Hong Kong Attention: Ms. Vivian Chan Dear Sirs, Re: HKD6,500,000,000 5-Month Term Loan Facility We, Industrial and Commercial Bank of China (Asia) Limited, are pleased to inform you that] [Strictly Private and Confidential 18 July 2012 Our Ref: CMD-OU-2012-2663LH-FL China Netcom Group Corporation (BVI) Limited c/o China Unicom (Hong Kong) Limited 75th Floor, the Center, 99 Queen’s Road Central, Hong Kong Attention: Ms. Vivian Chan Dear Sirs, Re: HKD1,000,000,000.00 5-Month Term Loan Facility We, Industrial and Commercial Bank of China (Macau) Limited, are pleased to inform you that we] [1. NAME OF REPORTING PERSON CHINA UNITED NETWORK COMMUNICATIONS GROUP COMPANY LIMITED (1) 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ¨ ¨ (A) 3. SEC USE ONLY 4. SOURCE OF FUNDS:]

[Execution version TELEFÓNICA INTERNACIONAL, S.A.U. AND CHINA NETCOM GROUP CORPORATION (BVI) LIMITED SUPPLEMENTAL AGREEMENT TO THE SHARE PURCHASE AGREEMENT FOR THE SALE AND PURCHASE OF SHARES IN CHINA UNICOM (HONG KONG) LIMITED THIS SUPPLEMENTAL AGREEMENT BETWEEN: (1) TELEFÓNICA INTERNACIONAL , S.A.U Seller (2) CHINA NETCOM GROUP CORPORATION (BVI) LIMITED Buyer RECITALS: (A) Share Purchase Agreement (B) Reference is also made] [CUSIP No. Y1505N 10 0 13D 1. NAME OF REPORTING PERSON]