When the error hapens the state of the sim card under about the phone is not available. I am running a Pixel 6a.

I have a log where I am somewhat sure that time of the error correlates with some log lines.

Does anyone have any insight in what to look out for in the logs?

For further troubleshooting. The error hapens about 0-2 times a day, sometimes more, sometimes less. Reboot usually solves the problem. But since there is no notification about the error I need to check it manually. Since I do not have to manipulate physically I am wondering how likely a hardwareproblem is.

I am also wondering how to rule out SIM or Phone hardwareproblem efficiently. If I get a replacement SIM or use this SIM in another phone, would be sufficient to rule out SIM failure? Is a phone side failure likely?

Grateful for any ideas.

Parts of my log:

03-16 19:26:26.579  1000  1316 15750 I Telecom : TelecomServiceImpl$1: registerPhoneAccount: account=[[ ] PhoneAccount: ComponentInfo{com.android.phone/com.android.services.telephony.TelephonyConnectionService}, 1, UserHandle{0} Capabilities: CallProvider MultiUser PlaceEmerg SimSub  Audio Routes: BESW Schemes: tel voicemail  Extras: Bundle[{android.telecom.extra.SUPPORTS_VIDEO_CALLING_FALLBACK=true}] GroupId: *** SC Restrictions: [ ]]: TSI.rPA(cap)@COE
03-16 19:26:26.583  1000  1316 15750 I Telecom : PhoneAccountRegistrar: Modify account: [ComponentInfo{com.android.phone/com.android.services.telephony.TelephonyConnectionService}, 1, UserHandle{0}]: TSI.rPA(cap)@COE
03-16 19:26:26.585  1000  1316 15750 I Telecom : CallsManager: handlePhoneAccountChanged: phoneAccount=[[X] PhoneAccount: ComponentInfo{com.android.phone/com.android.services.telephony.TelephonyConnectionService}, 1, UserHandle{0} Capabilities: CallProvider MultiUser PlaceEmerg SimSub  Audio Routes: BESW Schemes: tel voicemail  Extras: Bundle[{android.telecom.extra.SUPPORTS_VIDEO_CALLING_FALLBACK=true}] GroupId: *** SC Restrictions: [ ]]: TSI.rPA(cap)@COE
03-16 19:26:26.588  1000  1316 15750 I Telecom : PhoneAccountRegistrar: getSimCallManager: SimCallManager for subId 1 queried, returning: null: TSI.rPA(cap)@COE
03-16 19:26:26.588  1000  1316 15750 I Telecom : PhoneAccountRegistrar: Notifying telephony of voice service override change for 1 SIMs, hasService = false: TSI.rPA(cap)@COE
03-16 19:26:26.595  1000  1316  1817 W PermissionService: getPermissionFlags: Unknown user -1
03-16 19:26:26.595  1000  1316  1817 W PermissionService: getPermissionFlags: Unknown user -1
  • de0u replied to this.

    Talon If I get a replacement SIM or use this SIM in another phone, would be sufficient to rule out SIM failure?

    At the rate of zero to two times per day, putting the SIM into another phone for a couple of days might be indicative, though if it isn't easy to detect an outage event then it might not be that conclusive. Carriers are often very willing to issue a replacement SIM card.

    Talon Is a phone side failure likely?

    Unfortunately it is possible. If using a physical SIM, the internal contacts that touch the SIM could go bad. Or the cellular modem could go bad. Or something else!

    What have you tried so far? Have you tried "Reset Mobile Network Settings"? If you have set a cellular-band/protocol preference (4G-only, 5G-only, etc.), has that been undone?

        Since my last message I pulled out the sim card and gave it a dry cleaning. There was no real dirt, obvious contact issure or anything, but maybe a very slight transparent coating. After cleaning I got no further problems so far. Will report back if the error comes back.

        Thanks for the hell.

        • de0u replied to this.

          Talon Thanks for the interim report. Please do follow up!

            6 days later

            For now no more issues. Maybe some sort of moist and dust can bild up upon the sim card, I dont know. Alternatively it is just a little bit changed in position. If anything comes up I will follow up. Thanks again for the help.

              Talon Thanks for taking the tine to report back!