3G Speeds CDMA Only vs CDMA/LTE

[princem131]

I just did some speed tests, and then was researching ELTE speed test results and came across this little oddity; some people are getting faster 3G speeds with CDMA/LTE mode on instead of CDMA only. If it is true it could explain why Sprint shipped it with LTE on by default instead of CDMA only like (I heard) the Galaxy Nexus comes shipped.

I saw on the Web the improved performance is due to usage of "eHRPD" which I won't begin to pretend to understand lol.

One person over at Sprint 4G roll out forum (http://s4gru.com/index.php?/topic/66.../page__st__600) had this theory:

"eHRPD uses the same airlink and backhaul as EV-DO but uses the LTE core network instead of the EV-DO core network. If the airlink and backhaul are the same but eHRPD produces significantly higher data speeds than does EV-DO, then the LTE or EV-DO core network is the primary independent variable, hence likely responsible for the observed differences."

Again, I don't really know how all this works but was curious about you guy's experience/knowledge.

Below are my depressing speed tests, the result at the bottom and top 2 are CDMA only. The 3 in the middle or CDMA/LTE.



Positive Vibrations