Kies is the biggest load of junk I have ever had the misfortune to install. It does not connect the majority of the time. I previously installed the latest version and it would connect but not allow me access to anything. After a week and a half of email exchanges with Samsung they finally agreed that it was not compatible with my phone. I asked for a previouis version which had worked reasonably well and they said that they could only supply the latest version. Had to hunt the download sites to find it and it eventually worked. Absolute carp!!!
OnePlus 5 review