Sketchr
Android Enthusiast
I'll assume you misread EarlyMon, since your statement is correct other than "That's correct" (or there have been massive changes that I missed). Currently all calls are NOT done over 3G (or 4G for that matter), but are done over their slower 1x network. 3G and 4G are used exclusively for data. As EarlyMon said, the CDMA radio is used for Voice and 3G, and the 4G radio is separate.
I'm not sure about Verizon doing calls over 3G or not, but their LTE radios are separate as well, just like the WiMax ones in Sprint units.
I was confused by the reviewer commenting that his call quality changed depending whether he was in 3G or 4G mode. I thought that wouldn't make a difference at all because the calls revert to 3G regardless.
Hmm maybe I need to listen to that review again. I've been watching too many over the past few days. lol