Tethering is not possible. Sans rooting, I tried a lot of good rated tethering apps but all failed to tether via wifi/usb/bluetooth. It is because Verizon is doing business with it and when any one of these tethering is tried, it gets routed to subscription checking and eventually it fails. This problem seems to have been addressed by some XDA forum members successfully after rooting.
Jellybean plays spoilsport here also, conference call is not possible, the person called first remains on hold even after call-merge.
This is the first android handset I came across in which the primary google account can be deleted without resetting the phone. I deleted my google account and all the contacts vanished, but the call records remained there (now the names in the contacts against the numbers are not getting shown, obviously).
With MTS, voice call overrides data session and when voice call starts, the '3G' icon vanishes. No simultaneous voice + data.
Otherwise this is a very nice handset considering its display, built, screen size vis-a-vis overall size, internal user-usable memory, speed (default chrome browser behaves nicely), camera , location fixing and battery backup. The chisel-like shape is very attractive. And I liked the beautiful circle widget on the home screen.