Hi Phillip,
I am using the LS with a T2 as on-site base station providing corrections from an autonomous or know point. This works very well.
For a number of months I would occasionally use the LS via my mobile phone, hot spot or client's WiFi to the California Real Time Network. I found this frustrating as the signal quality wasn't consistent. My connection to the network wasn't consistent and the survey was inefficient. A month or so ago I upgraded my LS and activated on board 4G/LTE mini-card. My thought was this would increase efficiency in sending data to DPOS, particularly if I was planning a hybrid survey. I could collect an autonomous point, DPOS the data via the LS and the on-board cellular connection to the internet and run an optical survey if needed.
I activated the LS's 4G cellular radio and was very surprised at the connection stability. All of the problems I experienced connecting via WiFi were gone.
So, to answer your question directly - I am using the LS without a Jetpack and it works very, very well. I purchase a pay as you go data plan from AT&T.
After I read your question above I went back and reviewed the specs on the LS and T1M. Both are similar. This is from the LS Data Sheet:
4G LTE Mini Card
LTE, HSPA+, HSDPA, HSUPA, WCDMA, GSM, GPRS, EDGE (up to 100 Mbps)
LTE, EV-DO, 1xRTT CDMA (up to 100 Mbps)
The last line above refers to CDMA. My limited understanding is that Verizon uses CDMA technology. AT&T uses GSM (as does most of the world).
Does anyone know if the LS will now connect to Verizon's cellular network via the on-board mini card?
Side note: Why is the LS equipped with 2 SIM card modules?