Interesting acquisition announced today....Blackberry to acquire Good Technologies. For those of you who don't know or are familiar with Good, it's basically a BYOD platform for enterprises. (Email, intranet, etc.) Not necessarily directly Sprint related, but many people use both.
I've seen some threads recently about the differences between SIM/UICCs and though posting a compatibility matrix would help people.
This is pretty straightforward. The matrix has every Sprint LTE device, and what UICC card is meant for that device. Mix and matching UICC card types probably will not work, but swapping around UICC cards for devices that use the same type of card should work properly.
Keep in mind, you cannot simply move your UICC card to another phone to use it. Sprint's device authentication system still requires the correct UICC and MEID to be on the account to authenticate properly and work.
For what ever reason my magicbox stopped working with LTE backhaul after they sent me the gen 3. No I have the Casa pebble. It uses ethernet/wifi for backhaul. I just got it installed yesterday and mms is working great which was hit or miss with wifi calling. Hopefully VOLTE will start working on it soon as WiFi calling does tend to drop out from time to time.
It's not a CDMA vs. GSM thing. Verizon has had transferrable SIMs for awhile. It's a Sprint provisioning thing. T-Mobile will probably just get rid of Sprint provisioning altogether by doling out TMo SIMs rather than fixing the Sprint side.