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    Why can't I unlock the phone after a restart after having changed preferred network type? (Dual SIM)

    Question

    • Why can't I unlock the screen after a restart?
    • I cannot unlock the screen after having changed preferred network type and restarting the phone. How can I fix this?
    • My Dual SIM phone restarted after I changed preferred network type, and now I cannot unlock the screen. Why?
    • Why can't I unlock my Dual SIM phone after a restart after having changed preferred network type?

    Valid for

    • Xperia XZ1 Dual SIM
    • Xperia XZ Premium Dual SIM

    Solution

    You might experience that cannot unlock the screen of your Dual SIM phone after you changed Preferred network type in Settings and the phone restarted.

    This is a known issue caused by the Carrier Services app from Google. The issue has been fixed in version 23.0.245332218-carrierservices_V23G_RC13 of the app. To remedy the problem, you can update the Carrier Services app from Google Play Store.

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    On your Xperia™ device, go to Settings > About phone/tablet > Model number
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    On your Xperia™ device, go to Settings > About phone/tablet > Model number