I work with another developer. I would like to test its app but I don't have its iTunes Connect login / password and I don't have its dev certificates.
How can I test on my real device the bundle he sent to me without having many signing errors ?
I want to perform the test in Xcode in order to be able to use the debugger and perform some code modifications. I do not need to test the inapp purchase, just the core features of the app.