iOS 10.3无法安装企业In-House APP问题
，在 stackoverflow.com
上有：
https://stackoverflow.com/questions/43060212/cant-download-ios-app-using-in-house-at-ios-10-3-release-version
Can't download iOS app using in house at iOS 10.3 release version
具体解决方案就是：
I figured it out, it seems just trusting the certificate is no longer enough. You need to go into General -> About (yes, About, what a great place) -> Certificate Trust Settings. Then tick the switch next to your CA to trust it.