Drops carrier on screen lock on Ubuntu Touch: Meizu MX4 Ubuntu Edition

[MAK]

I am using Meizu MX4 Ubuntu Edition Phone. OS 15.04 (r4)

The carrier is lost when the screen gets locked after preset timing or after there is no activity on the phone. I have to restart the phone everytime to get a GSM carrier signal.

It is for every connection type 2G/3G/4G.

The carrier selection option is set to automatic and I cannot set it to manually either.

Anyone else calling on the number gets intimation that the phone is switched off.

The idea of having a Ubuntu phone is getting defeated here since the phone keeps dropping GSM carrier/signal on its own.

Any help from the community is highly appreciated

Operator is Reliance, Country India

Regards

[MAK (aj4k5)]

output when executing script "/usr/share/ofono/scripts/list-modems" is appended below :-

[ /ril_0 ]
    Model = Fake Modem Model
    Online = 1
    Powered = 1
    Features = gprs ussd net sms rat sim
    Interfaces = org.ofono.ConnectionManager org.ofono.Phonebook org.ofono.CallBarring org.ofono.CallForwarding org.ofono.CallSettings org.ofono.SupplementaryServices org.ofono.NetworkRegistration org.ofono.SmartMessaging org.ofono.PushNotification org.ofono.MessageManager org.ofono.MessageWaiting org.ofono.RadioSettings org.ofono.SimManager org.ofono.CallVolume org.ofono.VoiceCallManager org.ofono.NetworkTime
    Emergency = 0
    Serial = 862095022249970
    Type = hardware
    Manufacturer = Fake Manufacturer
    Revision = MOLY.LR9.W1421.MD.LWTG.MP.V6.P11, 2014/09/10 10:16
    Lockdown = 0
    [ org.ofono.ConnectionManager ]
        Powered = 0
        Bearer = none
        Attached = 0
        RoamingAllowed = 0
    [ org.ofono.Phonebook ]
    [ org.ofono.CallBarring ]
        VoiceOutgoing = disabled
        VoiceIncoming = disabled
    [ org.ofono.CallForwarding ]
        ForwardingFlagOnSim = 0
        VoiceNoReplyTimeout = 20
        VoiceNotReachable =
        VoiceBusy =
        VoiceNoReply =
        VoiceUnconditional =
    [ org.ofono.CallSettings ]
        CallingLinePresentation = unknown
        CallingNamePresentation = unknown
        HideCallerId = default
        CallingLineRestriction = unknown
        CalledLinePresentation = disabled
        ConnectedLineRestriction = unknown
        ConnectedLinePresentation = unknown
        VoiceCallWaiting = disabled
    [ org.ofono.SupplementaryServices ]
        State = idle
    [ org.ofono.NetworkRegistration ]
        Status = unregistered
        Name =
        Mode = auto
    [ org.ofono.SmartMessaging ]
    [ org.ofono.PushNotification ]
    [ org.ofono.MessageManager ]
        Alphabet = default
        UseDeliveryReports = 0
        ServiceCenterAddress =
        Bearer = cs-preferred
    [ org.ofono.MessageWaiting ]
        VoicemailMessageCount = 0
        VoicemailMailboxNumber =
        VoicemailWaiting = 0
    [ org.ofono.RadioSettings ]
        TechnologyPreference = umts
        FastDormancy = 0
        ModemTechnologies = gsm umts lte
    [ org.ofono.SimManager ]
        LockedPins =
        Retries = [pin = 10] [pin2 = 3] [puk2 = 10] [puk = 10]
        PinRequired = none
        Present = 1
        FixedDialing = 0
        SubscriberIdentity = 405050046313551
        BarredDialing = 0
        PreferredLanguages = en
        MobileCountryCode = 405
        MobileNetworkCode = 05
        CardIdentifier = 8991054630000135518
        SubscriberNumbers =
    [ org.ofono.CallVolume ]
        SpeakerVolume = 0
        MicrophoneVolume = 0
        Muted = 0
    [ org.ofono.VoiceCallManager ]
        EmergencyNumbers = 112 911
    [ org.ofono.NetworkTime ]

[MAK (aj4k5)]

There is no syslog present in /var/log

output of the command 'system-image-cli -i' run on the phone is appended below :-

current build number: 4
device name: arale
channel: ubuntu-touch/stable/meizu.en
last update: 2015-09-15 15:04:36
version version: 4
version ubuntu: 20150825.1
version device: 20150818-0b38025
version custom: 20150814-887-8-46

[MAK (aj4k5)]

Hi tony

Nothing other than apps from the store or standard updates has been installed.

I have very decent signal strength in my location.

When I lose carrier, if I check the network menu, it says "Unregistered "for the SIM status.

if I toggle flight-mode and donot lock the screen, the phone is able to re-register promptly and become usable again but if i toggle flight-mode and the screen is locked it does not re-registers itself and "Unknown" is shown for the SIM status, "None is shown for the Carrier". I believe the problem is with the screen locking up.

The Telegram app also forcibly logs you out once the screen gets locked and is unlocked again. It shows you as unauthorised user, all the chats get cleared up and it restores itself to initial setup screen.

I am using a four digit PIN to lock the screen.

I hope that helps!

[Launchpad Janitor (janitor)]

[Expired for ofono (Ubuntu) because there has been no activity for 60 days.]