android - Signed apk behaving very differently than if the application is run directly on emulator -

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i made android application @ end sends object in json format web service , there data goes database. when run application directly on android emulators works , data parsed mobile application database. made signed apk , tested on phone data going database not should. whole database filled 0 values in fields. dont understand why signed apk behaving differently actual code. if has idea problem please me. problem bugging me long time , cant find solution online.


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