Hi folks,
Currently in the USA and had planned to try RM for the first time. SIM not authorized/permitted by activation server, or some such nonsense. After serious poking around, I found this:
https://www.roammobility.com/support/Swapping_in_your_Roam_Mobility_Sim_in_your_iPhone. html

Why on earth would an unlocked iPhone need to be synced (and ever restored in some cases!) after a SIM swap?!

Any suggestions on how to get around this issue while still in the States and very much away from any computer with iTunes?