How do I undo a disabled requiered permission m

I got a new phone and I try to add contacts but a flagger appears sayig I disabled a required permission. How could I enable it so i can add contacts.and i could use my phone without it hanging up after a few seconds. I already tried rebooting it and application application manager

Settings/Apps/Phone/Permissions. If that doesn't fix it all, try doing the same with Contacts.