Ok looking closer at the 64 Xenon...
SIM 1 (Mini SIM) 2G/3G (WCDMA 900/2100 MHz)
SIM 2 (Micro SIM) 2G (GSM/GPRS/ EDGE 900/1800/1900 MHz) t
It doesn't have many North American cellular bands, and no 4G LTE at all.
This phone wasn't intended for the US. Could be why Archos stateside doesn't know much about it.
It's not even listed on:
http://www.willmyphonework.net/
These non-carrier dual-SIM devices are primarily sold in Asia, places like China, Hong Kong, Singapore, Malaysia, Philippines, Singapore, India, Pakistan, etc.
I suspect this phone is actually Chinese, but Archos are just having it branded and customized for them. It's a very large screen as phones go, but its specs are somewhat basic, Mediatek MTK processor at 1.3GHz, 1GB RAM,
internal storage only 4GB, etc. ..so not much space for apps.