Will the M9+ (China) or Butterfly 3 (Japan) function on any of the US carriers?

[PyroSporker]

Anyone have any great insight about the network bands of these two alternate phones or their internal radio details?

 

[EarlyMon]

It's an au by KDDI phone, including both LTE and WiMAX 2 support - gotta love the Japanese.

http://www.kddi.com/corporate/newsrelease/2015/0512-5/

au by KDDI implies that it's also CDMA.

Not surprisingly the original J Butterfly was easily stripped down to become the Verizon Droid DNA.

I'd used my Sprint phones on KDDI in the past but that was before the 800/850 MHz games so I don't know what they're doing there tbh.

Here's the possible au by KDDI LTE bands -

http://en.wikipedia.org/wiki/List_of_LTE_networks#Asia