How to Manually Trust an Enterprise App on an iPhone: 6 Steps

How to trust an app installed on an iPhone from outside the App Store

Co-authored by Théo Dufort and Travis Boylls

Last Updated: April 2, 2023 Fact Checked

Are you getting an error message that says "Untrusted developer" when trying to install an iPhone app? When you install an app from the App Store, the app is assumed to be trustworthy. Installing an app from another location requires you to manually trust the app's developer. If an enterprise app, such as those required by your workplace, is installed using a Mobile Device Management solution (MDM), it will be trusted automatically. But if you try to install an enterprise app manually, you will need to trust the app manually. Luckily, it's easy to do so. This wikiHow article teaches you how to trust an app on an iPhone.

Things You Should Know

Enterprise apps installed using a Mobile Device Management solution are trusted automatically.
To trust an app, open "Settings" and to go "General" > "Profiles" or "Profiles & Device Management". Tap the developer name and tap "Trust [developer name]."
Do not trust an app developer unless you are sure the app you want to install is trustworthy.

Steps

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1
Open the Settings app
on your iPhone. It has a grey icon that resembles two silver gears.
- You must have an internet connection to establish trust with an app developer. Make sure your iPhone is connected to the internet.
It's near the top of the Settings menu.

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3
Tap Profiles or Profiles & Device Management. The option you see will be different depending on your model of iPhone, but it should be the first option under VPN.
- If you don't see this option, try installing the app first. The option will only appear after you've installed an app that requires trust.
It should be listed below "Enterprise App" in the Profiles & Device Management menu.
It's the blue text at the top of the menu. This displays a confirmation pop-up screen.
6
Tap Verify App to confirm. Once you trust the developer, you will see a list of unverified apps from the developer that you have installed on your iPhone. Tap Verify App to verify the app.
- Once an app developer has been trusted and an app has been verified, you can open the app anytime you want.
- You do not need to repeat the verification process unless you delete the app.^{[1]
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Expert Q&A

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Question

Is trusting an app safe for my phone?

Théo Dufort
Software Engineer and Full-Stack Web Developer
Théo Dufort is a Software Engineer and Full-Stack Web Developer based in Quebec, Canada. With nearly 6 years of experience, Théo is a full-stack developer specializing in web development. At just 16, he launched his own consulting business to advise on all things web design and development. Most recently he created MyBookQuest, designed to be an all-in-one platform for book lovers to track, organize, and fill their personal library. MyBookQuest aims to fill the gaps of the popular Goodreads app owned by Amazon by rewarding its users with points to give them different perks like discount coupons as an incentive to read, review, and rate their latest book.

Théo Dufort

Software Engineer and Full-Stack Web Developer

Expert Answer

It will depend on where you got the app. If you're downloading apps from the Apple App Store, you're generally safe because Apple has strict guidelines and they have a review process that ensures all apps meet security and privacy standards. However, if you're installing apps from outside the App Store, known as "sideloading," the risks increase because those apps aren't verified by Apple. When you trust an app, you're allowing it access to certain parts of your device, so it’s crucial to stick with trusted sources and check reviews before downloading.

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