Best Mifi (wifi) for the US? suggestions

CDMA networks can't do both at once. Until Verizon and Sprint got LTE is was still one or the other. Because it's newer to both of them there are still MANY phones including smartphone's that still can't do both at the same time. AT&T and T-Mobile have always been able to do both at once.

 

My only issue with the millicent program is they have one plan. You're device I like a battery, once you use the 20 gb, it gets shut off till the next billing cycle. Their plan upgrade? Get a second device/account complete with new device purchase and activation fees. . I use upwards of 40 gb a month.. Yes it would still be cheaper, but inconvenient. I'll have to do some pondering on how much that convenience is worth lol. Thanks for the link btw.

 

When I am in 4 g area, I can do both. Cannot in 3g or 1x.

 

Correct, 3G and 1x are the CDMA network.