SIM menu spam

[JCM1860]

I keep getting the same spam message over and over. It says SIM menu (with the sim card symbol) in the upper left corner and it keeps prompting me to click 'ok' to subscribe to some contest (for $2.99). It doesn't matter what app I'm using it still pops out of nowhere. If anyone has any idea on how to stop this, please help.

 

[zorak950]

Most likely you've installed an app that's pushing ads. What kind of ad is it? Notification or window? Also, have you ever rooted your phone or installed custom firmware?