Just a few days after its nationwide launch, the Isis mobile payment venture is receiving relatively sour reviews from Android smartphone users. Isis, the mobile payments joint venture from Verizon Wireless (NYSE:VZ), AT&T Mobility (NYSE:T) and T-Mobile US (NYSE:TMUS), launched nationwide last week after more than a year of trials in Austin, Texas, and Salt Lake City. The nationwide launch coincided with a redesign of the venture's Android app that executives said would smooth users' payments. However, Google (NASDAQ:GOOG) Play users appear to be less than enthusiastic about the app: More than 1,400 reviewers have given Verizon's Isis app an average rating of 1.5 stars out of five stars. The AT&T and T-Mobile versions of the app have received similar ratings. "This ISIS is crap!" summed up one user. Isis hasn't commented on the situation, according to Cnet. Article