When i run app extension(Widget) in device.I got this error App installation failed

Question

This application or a bundle it contains has the same bundle identifier as this application or another bundle that it contains. Bundle identifiers must be unique.

Answer 1

If your application bundle identifier is com.companyName.productName then your extension bundle identifier should be com.companyName.productName.extensionName

If you assign the bundle identifier in this way then your provisioning profile will work for both.