This question already has an answer here:

My S3 has a damaged motherboard (says Samsung Tech Center), only boots into safe mode.

If I am to keep using the device I have to make the apps into system apps, so they run in safe mode.

One way is to use titanium backup (or other root file app) to make the app system, but the phone came back from Samsung wiped clean. It is still rooted, have SuperSu app installed.

Does anyone know how I can make a Play_Store or Downloaded_APK app system?

marked as duplicate by Dan Hulme, Mindwin, Bryan Denny Jul 10 '14 at 18:27

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • I won't tag this question as S3 or root because these details are specific to my own case, and have no relation to the broader question. – Mindwin Jul 10 '14 at 15:21
  • Yes, it is a duplicate. – Mindwin Jul 10 '14 at 17:11

Carl Parker writes about it on Android Authority:
(partly reproduced here in case the original post goes down)

For Apps Installed on the Device

  • Assuming you have installed the app on your device, go to the app’s Google Play Store link and take note of the words after “?id=” and ignore the rest.
  • Connect your device to the computer via USB cable.
  • Open the command prompt on your computer and type the following commands:
adb remount 
adb shell 
su 
cd /data/app/ 
  • Type the command ls appfilename* (where “appfilename” is the app’s ID on Google Play Store; make sure you include the asterisk at the end). This command will display the app’s complete APK filename.
  • Enter the following command:
mv apk_full_filename_here /system/app/apk_full_filename_here 
exit 
exit 
adb reboot 
  • The device will now reboot. Your app is now saved as a system app.

For Apps Whose APKs Are on the PC Hard Drive

  • Open a command prompt on your computer and navigate to where the APK file is located.
  • Enable USB debugging on your device and connect your device to the computer via USB cable.
  • Enter the following commands:
adb remount
adb push apk-filename-here /system/app/
adb shell chmod 644 /system/app/apk-filename-here
adb reboot

Your phone will automatically reboot. Your app will now be saved as a system app.

  • Hi, but where is the configuration of the system app is saved ? Is it also saved in /system/ ? – ransh Sep 6 at 12:34

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