Create this file how ever you like, and edit it to show what you want.
/system/etc/spn-conf.xml
<?xml version="1.0" encoding="utf-8"?>
<spnOverrides>
<spnOverride numeric="310004" spn="Verizon Wireless" />
<spnOverride numeric="310005" spn="Verizon Wireless" />
<spnOverride...