If you’re new to iOS development and want to test your first (or may be second 😛 ) on an iOS device (9.1+).
You will find a lot of guides pointing to go to `settings —> general —> profile` but it doesn’t work out in iOS 9.1 and above.
It is just it’s listed in another options.
Go to `Settings —> General —> Device management —-> Select your developer id —> Trust.`
And it’s done. You can now test your app on your device.
Hope it helps.