Seniors who opt for the Jitterbug Smart4 — Lively’s “simplest smartphone ever ... from $19.99 for the Basic plan plus 1 GB of data for $5 monthly to $79.99 per month for the Premium ...

The monthly service is extraordinarily expensive compared to other prepaid plans such as T-Mobile ... others that are now selling Jitterbug) buy blocks of cell phone numbers and re-sell them.