CDMA Disable

[tryinghard]

I have Sprint TP2. I want to use it only for GSM in another country. But it is currently showing as CDMA. When I went to options >settiogs> Connections > advanced and click select networks I see multiple options such as my company name, home, data network, my work network & My ISP. But I do not see an option for CDMA or GSM. What do I do.