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Editorial Team
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Asked: 2026-06-14T09:42:36+00:00

I synced code from AOSP onto my computer, modified the source for the Phone.apk

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I synced code from AOSP onto my computer, modified the source for the Phone.apk file. I ran make (for Maguro), and got a Phone.apk file back in the /out folder. I’m using an AOSP rom on my phone (but not the one that I compiled myself), but when I move the created Phone.apk file into /system/app I lose signal, and when I launch Settings > Mobile Networks I get a FC. Logcat says I’m missing MobileNetworkSettings.java (which I know that I’m not). What do I need to do in order to use the apk files that I built from the source?

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1 Answer

  1. Editorial Team

    The problem, I guess, is the following. Phone application uses sharedUserId: android:sharedUserId="android.uid.phone". So as the AOSP image and your Phone.apk are signed with different certificates your Phone application is not allowed to receive this shared UID (because applications can share the same UID if they are signed with the same certificate) and receives a new UID. Thus, Phone application cannot work with radio interface (loose signal) and cannot be configured.

    Try to create your AOSP image using your keys and flash it on the device. Then sign your Phone application with the same certificate. I guess this should help. Good luck!

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