On: Charge, a phone company with features for nerds

[walrus01]

The $3/month for an active SIM with billed-as-you-go data in $ per GB rate is a great deal like the "Ting" MVNO:

https://ting.com/rates

For something like emergency OOB access via HSPA+/LTE modem into critical infrastructure it's hard to beat $3-4 per month per active SIM card, when the actual amount of data moved in a month might be less than 50MB.