The grades of 4 Diversified Telecommunication Services stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

China Telecom Corp. Ltd. Sponsored ADR Class H (CHA) shows solid improvement this week. The company’s rating rises from a C to a D. China Telecom Corp. Ltd. Sponsored ADR Class H is an integrated information service provider that offers telecommunications services, including wireline voice services, mobile voice services, and Internet access services. The company also gets A’s in. For more information, get Portfolio Grader’s complete analysis of CHA stock.

AT&T Inc.’s (T) ratings are looking better this week, moving up to a D from last week’s C. AT&T Inc. operates in the communications services industry by providing wireless and wireline telecommunications services and equipment. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of T stock.

This week, TELUS Corporation’s (TU) ratings are up from a C last week to a D. TELUS Corporation is a telecommunications company that offers products and services in Canada. The company also gets A’s in. For more information, get Portfolio Grader’s complete analysis of TU stock.

inContact, Inc. (SAAS) gets a higher grade this week, advancing from a C last week to a D. InContact, Inc. provides cloud-based contact center software services and network connectivity in the United States. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of SAAS 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.