I have two Moto G4 phones. The one on GSM network does not break up outgoing texts that are over 160 bytes. The phone on the CDMA does. I was told the network difference is the reason why. Can I convert the CDMA to the GSM to remedy the issue?
Potentially, yes. Finding the appropriate solution to this issue would be best sorted by raising a help ticket, which you may do here: Republic Help.