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.

This is a strong week for PT Telekomunikasi Indonesia (Persero) Tbk Sponsored ADR Class B (TLK). The company’s rating climbs to B from the previous week’s C. PT Telekomunikasi Indonesia (Persero) Tbk Sponsored ADR Class B offers telecommunications services such as fixed-line, mobile, interconnection, network, data and Internet services. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of TLK stock.

AT&T; Inc.’s (T) ratings are looking better this week, moving up to a A from last week’s B. 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.

Straight Path Communications, Inc. Class B (STRP) improves from a C to a B rating this week. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of STRP stock.

8×8, Inc. (EGHT) earns a A this week, jumping up from last week’s grade of B. 8×8, Inc. provides voice-over-Internet protocol creation platforms, hosted Internet PBX solutions, voice and video semiconductors, and related software. The company also gets A’s in sales growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of EGHT 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.