How do I downgrade my iPhone from iOS 26 to iOS 18.5?

Jaysanja wrote:

After upgraded ios 26, battery drain very fast. Need to recharge full 3 times in a day. Earlier it was only single charge for full day. Not expected from apple this kind of glitch.

apple should think about seriously and provide option for switch to last version.

Apple has NEVER supported downgrading, and it's HUGELY unlikely they ever will. But you're not telling Apple what you think they should do here. Use this link if you want to tell Apple --> Feedback - iPhone - Apple

What you want to do.....you cannot do.

Sorry, downgrading the operating system is not supported

dinanja wrote:

Ios 26 update downgrade to ios 18.5 ios 26 is not satisfactory 

[Re-Titled by Moderator]

Original Title: ios 26 downgrade to 18.5

Unenroll Your Devices

ref: Apple Beta — Unenroll Your Devices

Revert and Restore Shipping Software:

ref: Apple Beta — Restore Shipping Software

note: The current stable release of iOS including bug fixes, security updates is iOS 18.6

Update your iPhone or iPad - Apple Support

Salimsaifi123 wrote:

My phone 18.5 upgred me plz sir

That will happen when Automatic Updates is turned on at Settings > General > Software Updates. Once updated, there is not a way to downgrade.

needanswer19 wrote:

My iPhone has been updated to iOS 26.0.1, it has been so hard for me to use at 64 years old. I want to go back to the old system. I can't use a lot of the features.

You can't go back.

No, it doesn't work that way.

Sorry, downgrading the operating system is not supported

ralik256 wrote:

How to downgrade iOS 26 back to iOS 18.5

You can't.

ViviMpoliari58 wrote:

I want to go back to IOS18

Had you read the other responses in this thread, you'd know that's not possible.

If you are referring to the official version that was just released (NOT the beta version), then the answer is this - once you update, you cannot revert back to an older version. Apple does not support that.

Perhaps this link will help you better understand iOS 26. If you have specific questions about the features, please post them in a new thread so we may try to help.

What’s new in iPadOS 26 - Apple Support

How to remove beta -

Apple Beta — Unenroll Your Devices

leshetzjacob wrote:

It’s not work

If you mean downgrading didn't work, you're right. You can't downgrade.

Hello~ You cannot. Read back through the other pages of this thread as this has been explained many times already.

~Katana-San~

covenant290 wrote:

how do I downgrade my iPhone from iOS 26 to iOS 18.5

You don't. It takes very little reading on this page to learn that.