These Installation instructions explain what to do when you encounter the new "Untrusted Enterprise Developer" message on iOS 9 and 10.
If you haven't downloaded an app before and it isn't in the App Store, you'll be prompted to go through a few screens to trust the app. This is something new that Apple introduced as of iOS 9.
Watch the short video below (or read the following steps) to learn how to "trust an app" on your mobile device. Remember, clients post tests without screening by us so use your judgment when downloading an unfamiliar app. It is up to you which tests you decide to complete or not.
First, tap Cancel to dismiss the message below.
Next, tap Settings > General
Then, Device Management
Now, tap the app certificate in the ENTERPRISE APP section.
Finally, tap "UserTesting Inc", then tap Trust again to complete the process.
Now you're ready to start testing! Click www.usertesting.com/go on your iPhone/iPad to continue.