Pinephone woon't stay registered

[jhasler]

Pinephone beta edition purchased last month.  Installed Mobian and a Tracfone sim.    Activated it successfully.  I can occasionally complete a call but it always gets terminated within a minute or two.  A typical log extract is included below.

Apr 01 17:05:03 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (idle -> registering)
Apr 01 17:05:03 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (registering -> home)
Apr 01 17:05:03 mobian ModemManager[600]: <info>  [modem0] state changed (enabled -> registered)
Apr 01 17:05:04 mobian ModemManager[600]: <info>  [modem0/call1] call state changed: dialing -> ringing-out (unknown)
Apr 01 17:05:05 mobian ModemManager[600]: <info>  [modem0/call1] call state changed: ringing-out -> active (unknown)
Apr 01 17:05:07 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (home -> idle)
Apr 01 17:05:07 mobian ModemManager[600]: <info>  [modem0] state changed (registered -> enabled)
Apr 01 17:05:07 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (idle -> registering)
Apr 01 17:05:07 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (registering -> home)
Apr 01 17:05:07 mobian ModemManager[600]: <info>  [modem0] state changed (enabled -> registered)
Apr 01 17:05:55 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (home -> idle)
Apr 01 17:05:55 mobian ModemManager[600]: <info>  [modem0] state changed (registered -> enabled)
Apr 01 17:05:55 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (idle -> registering)
Apr 01 17:05:55 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (registering -> home)
Apr 01 17:05:55 mobian ModemManager[600]: <info>  [modem0] state changed (enabled -> registered)
Apr 01 17:05:58 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (home -> idle)
Apr 01 17:05:58 mobian ModemManager[600]: <info>  [modem0] state changed (registered -> enabled)
Apr 01 17:05:58 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (idle -> registering)
Apr 01 17:05:58 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (registering -> home)
Apr 01 17:05:58 mobian ModemManager[600]: <info>  [modem0] state changed (enabled -> registered)
Apr 01 17:06:00 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (home -> idle)
Apr 01 17:06:00 mobian ModemManager[600]: <info>  [modem0] state changed (registered -> enabled)
Apr 01 17:06:00 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (idle -> registering)
Apr 01 17:06:00 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (registering -> home)
Apr 01 17:06:00 mobian ModemManager[600]: <info>  [modem0] state changed (enabled -> registered)
Apr 01 17:06:19 mobian ModemManager[600]: <info>  [modem0/call1] call state changed: active -> terminated (unknown)
Apr 01 17:06:29 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (home -> searching)
Apr 01 17:06:29 mobian ModemManager[600]: <info>  [modem0] state changed (registered -> searching)
Apr 01 17:06:29 mobian ModemManager[600]: <warn>  [modem0] couldn't load operator code: Current operator MCC/MNC is still unknown
Apr 01 17:06:29 mobian ModemManager[600]: <warn>  [modem0] couldn't load operator name: Current operator id is still unknown
Apr 01 17:07:02 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (searching -> idle)
Apr 01 17:07:02 mobian ModemManager[600]: <info>  [modem0] state changed (searching -> enabled)
Apr 01 17:07:02 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (idle -> registering)
Apr 01 17:07:02 mobian ModemManager[600]: <info>  [modem0] 3GPP registration state changed (registering -> home)
Apr 01 17:07:02 mobian ModemManager[600]: <info>  [modem0] state changed (enabled -> registered)