I'm thinking about switching soon from Verizon (CDMA) to Cricket (GSM), so I recently checked whether my Verizon GS4 will work OK on Cricket. Results: it works OK for me with 2G and 3G. At the 4G level I get the HSPA+ icon (sort of 3G+). My phone also worked fine for text, voice, email, internet, data, etc.
BTW, the phone compatibility checker on the Cricket web site shows that my GS4 is not compatible on Cricket, but it sure works well enough for me, mainly because I use very little data per month. I also posted about this on the Verizon GS4 forum.
BTW, the phone compatibility checker on the Cricket web site shows that my GS4 is not compatible on Cricket, but it sure works well enough for me, mainly because I use very little data per month. I also posted about this on the Verizon GS4 forum.