How iOS 18.3 Beta Affects Third-Party Apps & Sideloading

Apple released the iOS 18.3 Beta version in December. Typically, these updates are not meant for the general public. When Apple releases a new update, it usually aims to introduce new features while enhancing the security and privacy of iOS devices. This ensures that users have a secure experience on their iPhones and iPads.

However, sometimes updates also affect the installation of 3rd party apps and sideloading on these devices. If you are interested in understanding how this iOS 18.3 Beta update impacts third-party apps and sideloading, this article will explain this topic.

What is iOS 18.3 Beta Version?

Beta versions are usually released for testing purposes. The main goal of these updates is to identify and fix new bugs and issues. Users test the new update and report any problems they encounter. This can be considered “unfinished” software. Typically, such updates contain multiple stages, like developer beta and public beta. Developer beta is exclusively for software developers who test it to identify any bugs or issues. On the other hand, public beta versions are available to the general public, especially those interested in testing. These versions are generally more stable.

On December 16, 2024, Apple released the developer beta version 18.3, which was specifically for registered developers. The public beta version was released on the 18th. I downloaded and tested both versions to evaluate the update. However, I didn’t notice any significant improvements. Perhaps, when the stable update 18.4 is released around March or April, more substantial enhancements will be evident. Here are some key details of the updates:

Main Features and Improvements in iOS 18.3 Beta

1. Robot Vacuum Integration
   Apple has introduced improved support for robot vacuums through the Home app and Siri. Now, you can easily control your HomeKit-compatible robot vacuum cleaners, such as starting cleaning, stopping, or setting schedules.
2. Apple Intelligence
   Apple has introduced a new AI-powered language processing tool called “Apple Intelligence” in this update. But this feature, currently available only in American English, aims to make interactions with Siri and other services more natural and intuitive.
3. Performance and Battery Improvements
   iOS 18.3 introduces various adjustments to improve system performance and battery life. These optimizations ensure your device operates more smoothly and efficiently for longer use.
4. User Interface Enhancements
   This update also includes minor changes to the user interface, designed to refine the overall experience. While these tweaks are subtle, they contribute to a more polished and seamless interaction with the device.

iOS 18.3 Beta: Impact on Sideloading and Third-Party Apps

When it comes to sideloading and third-party apps like Scarlet iOS, the iOS 18.3 beta update doesn’t introduce any significant new features or announcements. However, this version focuses on addressing existing vulnerabilities and issues to improve system stability and security, which can indirectly affect sideloading practices.

Before this update, there was widespread speculation that Apple might allow sideloading and installation of apps from unofficial app stores on iPhones and iPads. This move is believed to align with the European Union’s strict regulatory requirements.

With the iOS 18.3 Beta, a new feature has been introduced for EU users, enabling them to install third-party apps, such as Scarlet iOS, along with sideloading capabilities. However, for users outside the EU, Apple’s existing policies and security measures remain unchanged.

As for sideloading, users can still activate Developer Mode and utilize tools like AltStore and Sideloadly to sideload apps on their devices.

How to Install iOS 18.3 Public Beta on iPhone

Step 1: Enroll in the Beta Program

• Visit Apple’s beta program page.
• Log in using your Apple ID and register your iPhone for the beta program.

Step 2: Back Up Your iPhone

• Navigate to Settings > Tap your name at the top > iCloud > iCloud Backup > Select Back Up Now.
• Alternatively, use iTunes or similar backup software to save your data.

Step 3: Get the Beta Profile

• After enrolling, download the beta configuration profile directly from Apple’s website.

Step 4: Install the Beta Profile

• Open Settings > General > VPN & Device Management.
• Tap the downloaded beta profile and complete the installation by following the on-screen steps.

Step 5: Update to iOS 18.3 Beta

• Head to Settings > General > Software Update.
• Choose Download and Install, and let the process finish.

How to Install iOS 18.3 Developer Beta on iPhone

Step 1: Register for an Apple Developer Account

• Go to the Apple Developer Program site.
• Sign in with your Apple ID and subscribe to the Developer Program (requires an annual fee).

Step 2: Create a Backup of Your iPhone

• In Settings, tap your name, go to iCloud, and select iCloud Backup > Back Up Now.
• Alternatively, you can back up using Finder or iTunes software.

Step 3: Download the Developer Beta Profile

• Log into your account on the Apple Developer website.
• Download the iOS 18.3 beta configuration profile onto your device.

Step 4: Install the Developer Profile

• Go to Settings > General > VPN & Device Management.
• Select the profile you downloaded and follow the installation instructions.

Step 5: Update Your iPhone to iOS 18.3 Developer Beta

• Open Settings > General > Software Update.
• Tap Download and Install, and wait for the installation to complete.