Unable to check the Samsung ipad unknown source option.

If Samsung tablet can't open the function of unknown source, it is recommended to try the operation:

1. Restart the phone and try again.

2. Back up important data (contacts, text messages, photos, etc.) in the mobile phone. ), try to restore the factory settings of mobile phones and eliminate the influence of third-party software.

If the problem still exists, it is recommended to take your mobile phone, purchase invoice and warranty card and send them to your nearest after-sales service center for testing.