Why can I only download or open apps with a wife connection and not using cell data?

[AC Question]

Recently purchased an S7 Edge. Using Straight Talk with an AT&T sim. Everything works as it should with the exception of all apps. I am not able to download or open any apps unless I am connected to wifi. I have checked settings to ensure updates over both wifi and cell data is enabled. I have also ensured the restrict background data is turned off. My mobile data is on and my enhanced LTE services is on. I do not have any data limits set. Under the data tab when I open an app, the view app settings button is greyed out and will not let me access it. I have talked to the Samsung folks at Best Buy and they are puzzled. Before I take this phone back, I wanted to see if anyone here can help. Thanks.

 

[B. Diddy]

Welcome to Android Central! Make sure the APN settings are correct: Straight Talk ::: Bring Your Own Phone ::: Keep everything you love

 

[ABOSWORTH007]

Wife connection... Lol