The BigBoss today released a new version of SBSetting CDMA which for Verizon and Sprint to fixed 3G problem.
For users having no service after using sbsettings on your 5.x CDMA device, it is not caused by sbsettings but instead by the 3g toggle.
To fix it:
1) Disable the 3g toggle in the more app (don’t use it)
2) go to settings, general, reset, and reset your network settings.
I am pushing a new sbsettings with a 3g toggle that should detect and not run on CDMA. I don’t have a 4s on CDMA so I can only test my4 Verizon which it seems to work ok there.