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I have a handheld POS terminal with a custom ICBC android 5.1.1 "TERMINAL VERSION" installed. A lot is missing in the version, tapping "about terminal", then "build number" shows a page but the "developer mode" option is missing. the ADB is off as well. Side loading apps using OTG results in the "App not installed" error. What can i do to get to developer mode or turn on adb or install apps?

  • It sounds like this device is in kiosk mode, or is fully managed. See developer.android.com/work/dpc/dedicated-devices for more information. If this is the case, only an admin component can modify users, app whitelists, or otherwise change the system settings. – CzarMatt Jul 16 at 18:15
  • Thank you so much – Lance Rolle Jul 16 at 19:03

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