[FORM 10-K ý For the Fiscal Year Ended December 31, 2010 o For the transition period from to UTSTARCOM, INC. Delaware (State or other jurisdiction of 52-1782500 20F, Tower E1, The Towers, Oriental Plaza 100738 +86(10) 8520-5588 Title of Each Class Name of Exchange on which Registered Common Stock, $0.00125 par value The NASDAQ Stock Market LLC None o ý] [QuickLinks -- Click here to rapidly navigate through this document UTSTARCOM SUBSIDIARIES Name Place of Incorporation or Organization UTStarcom International Products, Inc. U.S.A UTStarcom International Services, Inc. U.S.A Issanni Commnications, Inc. U.S.A UTStarcom (China), Co., Ltd. China UTStarcom Telecom Co., Ltd. China UTStarcom (Chongqing) Telecom Co., Ltd. China Baide Wei Information Technology (Shanghai) Co., Ltd. China UTStarcom Hong Kong Ltd.] [QuickLinks -- Click here to rapidly navigate through this document CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-108817, 333-92340, 333-84710, 333-44548, 333-60150, 333-120564, 333-127850, 333-136551 and 333-161639) of UTStarcom, Inc. of our report dated March 16, 2011 relating to the consolidated financial statements, financial] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION I, Jack Lu, certify that: 1. I have reviewed this annual report on Form 10-K of UTStarcom, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION I, Edmond Cheng, certify that: 1. I have reviewed this annual report on Form 10-K of UTStarcom, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in] [QuickLinks -- Click here to rapidly navigate through this document (1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Dated: March 16, 2011 President and Chief Executive Officer Senior Vice President and Chief Financial Officer EX-32.1 6 a2202701zex-32_1.htm EX-32.1]

[FORM 10-K For the Fiscal Year Ended December31, 2010 o For the transition period fromto UTSTARCOM,INC. Delaware (State or other jurisdiction of 52-1782500 20F, Tower E1, The Towers, Oriental Plaza 100738 +86(10) 8520-5588 Title of Each Class Name of Exchange on which Registeredmmon Stock, $0.00125 par value The NASDAQ Stock MarketLLC] [QuickLinks -- Click here to rapidly navigate through this document UTSTARCOM SUBSIDIARIES Name Place oforporation or Organization UTStarcom International Products,Inc. U.S.A UTStarcom International Services,Inc. U.S.A Issannimmnications,Inc. U.S.A UTStarcom (China),Co.,Ltd. China UTStarcom TelecomCo.,Ltd. China UTStarcom (Chongqing) TelecomCo.,Ltd. China Baide Wei Information Technology (Shanghai)Co.,Ltd. China UTStarcom Hong KongLtd. Hong KongR] [QuickLinks -- Click here to rapidly navigate through this documentNSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We herebynsent to theorporation by reference in the Registration Statements on FormS-8 (Nos.333-108817, 333-92340, 333-84710, 333-44548, 333-60150, 333-120564, 333-127850, 333-136551 and 333-161639) of UTStarcom,Inc. of our reportted March16, 2011 relating to thensolidated financial statements, financial statementhedules and the effectiveness] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION I, Jack Lu, certify that: 1. I have reviewed this annual report on Form10-K of UTStarcom,Inc.; 2. Based on my knowledge, this report does notntain any untrue statement of a material fact or omit to state a material fact necessary to make the statements] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION I, Edmond Cheng, certify that: 1. I have reviewed this annual report on Form10-K of UTStarcom,Inc.; 2. Based on my knowledge, this report does notntain any untrue statement of a material fact or omit to state a material fact necessary to make the statements] [QuickLinks -- Click here to rapidly navigate through this document (1) (2) The informationntained in the Report fairly presents, inl material respects, the financialndition and results of operations of thempany.ted: March16, 2011 President and Chief Executive Officer Senior Vice President and Chief Financial Officer EX-32.1 a2202701zex-32_1.htm]

[UTStarcom Releases Financial Results for Fourth Quarter and Full Year 2010 Beijing, China, March 11, 2011 — UTStarcom, Inc. (“UTStarcom” or “the Company”) (NASDAQ: UTSI), a leading provider of interactive, IP-based network solutions in iDTV, IPTV, Internet TV and Broadband for cable and telecom operators, today reported financial results for the fourth quarter of 2010 and for the full year]

[1 Full Year and Fourth Quarter 2010 Earnings Call Presentation Jack Lu, CEO Edmond Cheng, CFO NASDAQ: UTSI March 2011 3 Agenda 2010 Full Year Highlights 1 Financial Overview Growth Strategy & Market Dynamics 2 3 Financial Outlook 4 4 2010 Full Year Highlights Full year total revenues were $291.5 million; exceeding our adjusted revenue target of $ 270-280 million]

[UTStarcom Releases Financial Results for Fourth Quarter and Full Year 2010 Beijing, China, March11, 2011 UTStarcom,Inc. (UTStarcom or thempany) (NASDAQ: UTSI), a leading provider of interactive,IP-based network solutions in iDTV,IPTV,Internet TV and Broadband forble and telecom operators, today reported financial results for the fourth quarter of 2010 and for the full year ended December31, 2010.]

[1 Full Year and Fourth Quarter 2010 Earningsll Presentation Jack Lu, CEO Edmond Cheng, CFO NASDAQ: UTSI March 2011 3enda 2010 Full Year Highlights 1 Financial Overview Growth Strategy & Market Dynamics 2 3 Financial Outlook 4 4 2010 Full Year Highlights Full year total revenues were $291.5 million; exceeding ourjusted revenue target of $270-280]