I see the following output using those debs

2014-08-27 16:23:38,267 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/PageChooseCarrier.qml:67:17: Unable to assign [undefined] to QObject*
2014-08-27 16:23:38,308 - WARNING - QOfonoNetworkOperator::registerOperator() failed: QDBusError("org.ofono.Error.AccessDenied", "Operation not permitted")
2014-08-27 16:23:38,308 - WARNING - registerComplete failed with error: org.ofono.Error.AccessDenied Operation not permitted Falling back to default
2014-08-27 16:24:12,488 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/PageChooseApn.qml:268:5: QML Connections: Cannot assign to non-existent propert
y "onContextsChanged"
2014-08-27 16:24:12,493 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/PageChooseApn.qml:55: TypeError: Cannot read property 'contexts' of undefined
2014-08-27 16:24:12,494 - WARNING - file:///usr/share/ubuntu/settings/system/qml-plugins/cellular/PageChooseApn.qml:269:17: Unable to assign [undefined] to QObject*
pa

and this is syslog:

Aug 20 09:04:19 ubuntu-phablet URfkill[22242]: Modem found: '/ril_0'
Aug 20 09:04:19 ubuntu-phablet URfkill[22242]: killswitch state: KILLSWITCH_STATE_NO_ADAPTER new_state: KILLSWITCH_STATE_UNBLOCKED
Aug 20 09:04:19 ubuntu-phablet URfkill[22242]: Setting device 100 (WWAN) to unblocked
Aug 20 09:04:19 ubuntu-phablet URfkill[22242]: device_changed_cb: Fake Manufacturer Fake Modem Model
Aug 20 09:04:19 ubuntu-phablet URfkill[22242]: killswitch state: KILLSWITCH_STATE_UNBLOCKED new_state: KILLSWITCH_STATE_SOFT_BLOCKED
Aug 20 09:04:19 ubuntu-phablet URfkill[22242]: <warning> Could not set Online property in oFono: GDBus.Error:org.ofono.Error.Failed: Operation failed
Aug 20 09:04:19 ubuntu-phablet NetworkManager[1633]: <warn> OFONO modem set enabled failed: (19) Method "SetProperty" with signature "sv" on interface "org.ofono.ConnectionManag
er" doesn't exist
Aug 20 09:04:19 ubuntu-phablet /03mmsproxy: Adding route for MMS connection /310410528924256/context2 on /ril_0 (rmnet_usb0)
Aug 20 09:04:19 ubuntu-phablet /03mmsproxy: failed to add route: org.freedesktop.DBus.Error.UnknownObject: Method "GetProperties" with signature "" on interface "org.ofono.Conne
ctionContext" doesn't exist
Aug 20 09:04:19 ubuntu-phablet kernel: [34624.654748] mmc0: mmc_start_bkops: Starting bkops
Aug 20 09:04:20 ubuntu-phablet kernel: [34626.169291] mdm_power_down_common: MDM2AP_STATUS never went low. Doing a hard reset
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> Auto-activating connection '/310410528924256/context2'.
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> Activation (/ril_0) starting connection '/310410528924256/context2'
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> (/ril_0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) scheduled...
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) started...
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> Activation (/ril_0) Stage 1 of 5 (Device Prepare) complete.
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <warn> OFONO connection failed: (32) Method "SetProperty" with signature "sv" on interface "org.ofono.ConnectionContext" doe
sn't exist
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> (/ril_0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <warn> Activation (/ril_0) failed for connection '/310410528924256/context2'
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> (/ril_0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Aug 20 09:04:21 ubuntu-phablet NetworkManager[1633]: <info> (/ril_0): deactivating device (reason 'none') [0]