iOS 17 Sideloading: New Features and Restrictions

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iOS 17 Sideloading: The Biggest Shift in iPhone History

iOS 17, released September 2023, brought StandBy mode, a redesigned phone app, journal functionality, and contact posters. But its most consequential development for sideloaders came six months later: iOS 17.4, released March 2024, opened the door to alternative app marketplaces and direct sideloading in the European Union for the first time ever — a landmark moment driven by the EU’s Digital Markets Act (DMA).

This guide covers what changed, what stayed the same, and how to get the most out of sideloading on iOS 17 whether you are in the EU or anywhere else in the world.

iOS 17.4 and the EU Digital Markets Act

Under the DMA, Apple was legally required to allow EU-based users to install apps from sources other than the App Store. Starting with iOS 17.4 on devices with an EU region setting:

  • Users could install alternative app marketplaces — third-party app stores operating outside the App Store
  • Developers could distribute apps directly from their own websites to EU users without App Store review
  • Apps distributed this way still required passing Apple’s Notarization — a basic security check, but far less restrictive than full App Store review
  • Apple introduced a Core Technology Fee for apps exceeding one million EU installs per year — a controversial measure that drew criticism from developers

How EU Alternative Marketplace Installation Works

  1. Visit an approved alternative marketplace website in Safari (EU devices only)
  2. Download and install the marketplace app itself — iOS displays an Apple consent screen explaining you are installing from outside the App Store
  3. Open the marketplace and browse available apps
  4. Install apps as you would from the App Store — no manual certificate trust required

This is smoother than enterprise certificate sideloading in some ways, but Apple’s Notarization gatekeeping means not every app sideloaders want is available through official DMA channels.

Sideloading on iOS 17 Outside the EU

For users in the United States, United Kingdom, Canada, Australia, Asia-Pacific, and most of the world, iOS 17.4’s DMA changes were completely inaccessible. Apple geo-fenced the alternative marketplace feature strictly to devices with EU region settings. Outside the EU, iOS 17 is functionally identical to iOS 16 from a distribution standpoint — App Store only, with enterprise certificate sideloading as the practical workaround.

This is where Scarlet iOS fills the gap for the vast majority of global iPhone users. No region restriction, no EU device requirement, no Notarization gatekeeping — just a straightforward library of apps available to anyone.

How Scarlet iOS Works on iOS 17 (Global)

  1. Open Safari and visit scarletios.com
  2. Tap the install button and allow the download when Safari prompts
  3. Go to Settings > General > VPN & Device Management
  4. Find the Scarlet iOS certificate and tap Trust
  5. Open Scarlet iOS and install any app from the curated library

The complete process takes under two minutes. The same steps apply on iOS 18 — see our How to Sideload Apps on iOS 18 Without Jailbreak for the updated walkthrough.

New iOS 17 Security Features Relevant to Sideloaders

Check In (Safety Feature)

iOS 17’s Check In feature lets users automatically notify a trusted contact when they arrive home safely. This feature has no interaction with sideloading but demonstrates Apple’s continued expansion of location-based features — sideloaded apps requesting location access should be scrutinized carefully.

Enhanced Autocorrect and Predictive Text

iOS 17’s improved on-device keyboard intelligence processes text entirely on-device. Sideloaded apps that use the standard iOS keyboard benefit from these improvements without any changes on the developer’s part.

NameDrop and Proximity Features

iOS 17 introduced NameDrop — contact sharing via device proximity using NFC and Bluetooth. Sideloaded apps cannot leverage NameDrop or the underlying proximity APIs without App Store distribution and specific entitlements.

iOS 17 Device Compatibility

iOS 17 dropped support for iPhone 8, iPhone 8 Plus, and iPhone X — all A11-chip devices. Supported devices start from iPhone XS (A12 Bionic chip) and newer. All of these are fully supported by Scarlet iOS for sideloading.

Troubleshooting iOS 17 Sideloading Issues

  • EU marketplace not showing (EU users): Verify your device region is set to an EU member state under Settings > General > Language & Region.
  • VPN & Device Management section missing: This section only appears after at least one certificate or profile is installed. Complete the Scarlet iOS installation first.
  • App revoked after iOS 17 minor update: iOS 17 point updates have occasionally triggered certificate enforcement actions. Update Scarlet iOS to receive the latest signed builds.
  • Private Browsing requires Face ID: iOS 17 locks Private Browsing tabs behind biometric authentication. If you prefer visiting sideloading sites privately, authenticate when opening Private mode.

What Comes Next: iOS 18

iOS 17’s DMA implementation set the stage for significant further changes in iOS 18, including expanded web distribution, more approved alternative marketplaces, and new API access for non-App Store apps. Read the full breakdown in our iOS 18 Sideloading Revolution guide.

For users everywhere outside the EU, Scarlet iOS remains the best way to sideload on iOS 17. Get Scarlet iOS today and install the apps you want, on any iOS 17 device, in minutes.

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