Why is my mobile network now not working?

[AC Question]

I rooted my LG optimus f3 v8 with iroot...everything works great but mobile network isn't working at all. My phone is through boost mobile and everything else works but that. Did I do something wrong?

 

[Rukbat]

Maybe not you, but iRoot did. There's no way to know what a rooting app does, if it's doing anything other than rooting (which is just copying a single file to the phone, basically). As someone on XDA says, if you can't root your phone manually, you shouldn't be rooting your phone.