App installation failed: Could not write to the device

Question

In Xcode 6.3, I got this error when trying to run an iOS project written in Swift on a real device.

App installation failed

c

Answer 1

Nothing helped me. I followed the below steps,

1. Clean derived data folder
2. Quit Xcode and disconnect device
3. Restart Macbook
4. Restart Device
5. Open Xcode
6. Clean and run the project

Finally I got it working!!