Found this while browsing. Talks about device and phone number swapping...
Good article.
Hopefully we can develop an FAQ section, by MVNO, in the MVNO section. It could cover on-boarding, troubleshooting, porting in and out, etc.
I thought this review/explanation was the most comprehensive for the LTE SIM version of Freedompop:
http://www.cranialborborygmus.com/FreedomPop-LTE-gsm-sim-review.htm
Thanks for this! It is indeed very helpful and answered a lot of questions I have!