[SOLVED] can't add an APN. May have frozen or uninstalled applicable service? topic

Hi.

I currently have stock 80020y and have disabled 'some stuff' that looked unimportant in my D800.
Now, menu key on the APN page in settings doesn't bring up any menus.
I need it to to add my Straight Talk APNs.

Does anyone know off the top of their head which service or app I should restore?

edit: nevermind, the GravityBox Pie control's menu key was the problem. Temporarily re-enabling the navigation bar in LG Pie Support resolved.