A:Answer There seems to be a confusion on the website.
The product that BestBuy ships is, likely, not the product that is described on the website (SKU 6048700).
Here are the differences.
1) The model that BestBuy ships is SM-J530G, meanwhile on the website it is listed as SM-J530G/DS.
2) There is no place on the phone for the second SIM. (The space for the second nano SIM card on the thin tray is filled with plastic).
3) There is no 3000 mAh battery in the box. The battery is permanently fixed in the phone. But it is still a 3000 mAh one.
4) I confirm the functionality of the LGE Band 4 only. Cannot say anything about other bands. By the way, on Band 4 the phone works perfectly.