Comment 22 for bug 1819615

I would like to report a regression.
i have a verizon samsung phone using as a bluetooth CDMA/3G modem.
after the upgrade modemmanager disconnects ~30sec after connecting.

attached find modem manager --debug logs

<debug> [1556654159.032559] Running registration checks (CDMA1x: 'yes', EV-DO: 'yes')
<debug> [1556654159.032629] Will skip all QCDM-based registration checks
<debug> [1556654159.032649] Will skip generic detailed registration check, we don't have Sprint commands
<debug> [1556654159.032684] loading signal quality...
<debug> [1556654159.032748] Starting QCDM-based registration checks
<debug> [1556654159.032766] Skipping all QCDM-based checks and falling back to AT-based checks
<debug> [1556654159.032782] Starting AT-based registration checks
<debug> [1556654159.032841] Couldn't refresh signal quality: 'No AT port available to run command'
<debug> [1556654159.032887] EVDO registration: 0
<debug> [1556654159.032899] CDMA1x registration: 1
<debug> [1556654159.032911] Fallback access tech: 0x00000400
<debug> [1556654159.032927] Fallback access technology: 0x00000400
<debug> [1556654159.032977] No CDMA service found
<debug> [1556654159.032991] All CDMA registration state checks done
<debug> [1556654159.033076] Connected bearer not registered in CDMA network
<debug> [1556654159.033172] Periodic signal quality checks scheduled in 30s
<debug> [1556654161.006911] Connection monitoring is unsupported by the device
<debug> [1556654174.016444] Forcing bearer disconnection, not registered in CDMA network
<debug> [1556654174.016472] Forcing disconnection of bearer '/org/freedesktop/ModemManager1/Bearer/0'
<info> [1556654174.016551] Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connected -> disconnecting)