Samsung N0te39009 document can't be opened!

According to your description, it may be that the file is not compatible with the mobile phone, so I suggest you:

1. Press and hold the menu button in the lower left corner to enter the safe mode of the mobile phone when it is turned off and restarted. Shut down and restart to see if it is back to normal.

2. Try to uninstall the third-party software (Settings-Applications-Manage Applications-Select Download-Uninstall)

3. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings (Settings-Privacy-Restore Factory Settings). If the problem still exists, I suggest you take the three-guarantee certificate of your mobile phone and send it to the nearest Samsung service center for testing.