Exhibit 15.1

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, 333-84710, 333-44548, 333-60150, 333-120564, 333-127850, 333-136551 and 333-161639) of UTStarcom Holdings Corp. of our report dated May 19, 2015 relating to the financial statements, financial statement schedules and the effectiveness of internal control over financial reporting, which appears in this Form 20-F.

/s/ PricewaterhouseCoopers Zhong Tian LLP

Shanghai, the People’s Republic of China

May 19, 2015