What happens when clicking iOS 26 Dev Beta? I am just having it to remove iOS 27 notification as I am not yet ready to update for reliability?

Setting your phone up to receive iOS 26 beta updates, just to suppress the reminder that iOS 27 is available, is a very bad idea.

Especially if the reason for doing it is "reliability"!

Beta software may contain major bugs, and if you use beta software, you cannot get support for any issues which you might be facing with it in these forums. About the only things we can discuss about beta software here are the risks of using it, the caution not to use it on an iPhone that you rely upon for everyday stuff, and how to remove it from your iPhone.

If you are interested in reliability, installing beta software would probably be about the worst thing you could do. Beta is "test" software. You are the guinea pig, and there will be support for the software unless you are registered developer with Apple.

Expect bugs. Further, expect some apps that were working fine before to have some surprises.

Apple very strongly recommends only installing beta software on a spare phone.....not your everyday phone.

Was your device Jailbroken? If that's the situation, please be informed that attributing the issues to iOS updates may not be accurate.

I have been updating my devices ever since I bought my first device in 2009. iPhone 3Gs, 4S, 5, 6, SE (1st Gen), 7, 8, and iPhone 12 Pro, iPad Pro, iPhone 13, 13 pro and iPhone 17, Macbook Air 2019, MacBook Pro 16" Nov 2024.

I never had any issues with any iOS, iPadOS, or macOS updates to date.

I would personally recommend everyone update their devices instead of listening to rumors from people who may not have kept their devices free from any spurious software.

iOS / iPadOS devices cannot be hacked or infected with Virus / Malware / Spyware if it is updated to the latest iOS/iPadOS unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken. 

iOS updates generally aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. Issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

This seems purely coincidental, so please check the settings on your device.

See what each update does: About iOS 27 Updates, About iOS 26 Updates, About iOS 18 Updates, About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

Based on the Apple Model Number A3102, this device is the global/international variant of the Apple iPhone 15 Pro. [1, 2]

Here are the key specifications for this specific model:

📱 Hardware Specifications

AttributeSpecificationModeliPhone 15 Pro (Global / A3102)ProcessorApple A17 Pro (3nm chip)Memory8 GB RAMDisplay6.1-inch Super Retina XDR OLED (120Hz ProMotion)BuildTextured matte glass back with a Titanium framePort TypeUSB-C (USB 3.2 Gen 2 speeds)SIM SupportDual SIM (Nano-SIM + eSIM)

Would you like to compare the A3102 global variant features against regional models (like the US or China variants), or do you need help troubleshooting a hardware issue on this device?

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You can get rid of the red badge by updating to the latest software version. There's no other way to get rid of it permanently. You can temporarily get rid of it by installing a management profile - search Google if you're interested.

Beta software is not recommended for your main device. It might have serious problems - apps you rely on might not work and it might lose your data.

To delete a downloaded iOS update that has not been installed yet, go to Settings > General > iPhone Storage, find the iOS update file in the list, and tap Delete Update

Then turn off automatic updates in Settings, General, Software updates.

Zurarczurx wrote:

You can get rid of the red badge by updating to the latest software version. There's no other way to get rid of it permanently. ...

Unless you remove the uninstalled update then turn off automatic updates and downloads