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

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Answer 1

OK, few things you should consider that could guide us to the problem, please check and post the answers:

1. is your project using capabilities? are they set correctly (should be all green)
2. did you try with a different project (something really simple)?
3. are you able to install apps from the App Store?
4. did you check the amount of free space left in the device?

if not, another suggestion will be using exception breakpoint, there is someone that posted an explanation how to setup it, do it and post the logs

App installation failed

I hope it helps you