Go to Settings > Security (or Biometrics and Security ) on your Samsung device and allow installations from your browser or file manager.
Since this is a community mod, you won't find it on the Google Play Store. Follow these steps to install it safely: descargar dolphin mmjr 30 para android samsung
Look for the version labeled Dolphin MMJR v3.0 (or the latest revision of the MMJR3 branch). Go to Settings > Security (or Biometrics and