This week, the ratings of 10 Wireless Telecommunication Services stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

China Mobile Limited Sponsored ADR (CHL) gets weaker ratings this week as last week’s C drops to a D. China Mobile Limited Sponsored ADR provides a range of mobile telecommunications services throughout mainland China and in Hong Kong. For more information, get Portfolio Grader’s complete analysis of CHL stock.

This week, Rogers Communications Inc. Class B (RCI) drops from a C to a D rating. Rogers Communications Inc. Class B is a communications and media company in Canada. For more information, get Portfolio Grader’s complete analysis of RCI stock.

This week, United States Cellular Corporation’s (USM) rating worsens to a F from the company’s D rating a week ago. United States Cellular Corporation is a wireless telecommunications service provider. The company also gets F’s in operating margin growth, earnings growth, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of USM stock.

PLDT, Inc Sponsored ADR (PHI) earns a F this week, moving down from last week’s grade of D. PLDT, Inc Sponsored ADR provides domestic and international long distance and cellular telephone services. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of PHI stock.

Vodafone Group Plc Sponsored ADR (VOD) slips from a D to a F this week. Vodafone Group Plc Sponsored ADR is engaged in providing voice and data communications services for both consumers and enterprise customers, with a significant presence in Europe, the Middle East, Africa, the Asia Pacific region, and the United States. The company also gets F’s in operating margin growth. For more information, get Portfolio Grader’s complete analysis of VOD stock.

This is a rough week for SK Telecom Co., Ltd. Sponsored ADR (SKM). The company’s rating falls to D from the previous week’s C. SK Telecom Co., Ltd. Sponsored ADR operates primarily in South Korea as a provider of wireless telecommunications. For more information, get Portfolio Grader’s complete analysis of SKM stock.

Spok Holdings, Inc.’s (SPOK) rating weakens this week, dropping to a D versus last week’s C. The company also gets F’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of SPOK stock.

Slipping from a D to a F rating, America Movil SAB de CV Sponsored ADR Class L (AMX) takes a hit this week. America Movil SAB de CV Sponsored ADR Class L provides wireless and fixed-communications services throughout Latin America. The company also gets F’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of AMX stock.

Turkcell Iletisim Hizmetleri A.S. Sponsored ADR (TKC) experiences a ratings drop this week, going from last week’s D to a F. Turkcell Iletisim Hizmetleri A.S. Sponsored ADR offers cellular telephone, voice and data communication services through its GSM network in Turkey. The company also gets F’s in earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of TKC stock.

VimpelCom Ltd. Sponsored ADR (VIP) declines this week from a C to a D. VimpelCom Ltd. Sponsored ADR provides an integrated telecommunications service through a range of wireless, fixed, and broadband technologies throughout the world. For more information, get Portfolio Grader’s complete analysis of VIP stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.