On the note 3, changing the instance of "uc" to "xx" in feature.smali does it.just changed settings in
system\csc\feature.xml
Removed:
<CscFeature_Framework_ReplaceDataTypeIconAsOpBrand>OYC</CscFeature_Framework_ReplaceDataTypeIconAsOpBrand>
Added:
<CscFeature_Fota_Operator>ATT</CscFeature_Fota_Operator>
Changed:
<CscFeature_Sip_ReplaceSymbolLayout4>TMO</CscFeature_Sip_ReplaceSymbolLayout4>
To This:
<CscFeature_Sip_ReplaceSymbolLayout4>ATT</CscFeature_Sip_ReplaceSymbolLayout4>
Don't know what was the exact thing that triggered the signal icons,
but the signal icons where already in rom
On s5 it can be done with a build.prop edit. I don't recall the exact name atm. No pc in front of me.
I have not done it your way before.