[Diabetes-Talk] As a precaution, I am setting my iOS devices to not update to iOS 26

Wed Sep 10 20:25:11 UTC 2025

Thanks for the info.  

From: Diabetes-Talk <diabetes-talk-bounces at nfbnet.org> On Behalf Of Patricia Maddix via Diabetes-Talk
Sent: Wednesday, September 10, 2025 12:21 PM
To: NFB Diabetes Division <Diabetes-Talk at nfbnet.org>
Cc: Patricia Maddix <pmaddix at comcast.net>
Subject: [Diabetes-Talk] As a precaution, I am setting my iOS devices to not update to iOS 26

I just got an email from Tandem, see below, this morning warning me not to update to iOS 26 until they’ve done more testing for the use of this operating system with their software. I learned and that email that since iOS 18.4 that all devices are automatically set to automatically Download all updates and upgrades. Even though I had turned this setting off in the past, I went in and did discover that it was set to automatically update. Don’t know if this upgrade will interfere with Dexcom and Libre, but there’s always that possibility so personally I’m setting my devices so they will not update until I want to manually do it. Instructions for changing the settings Are in the below email.

Patricia.

Sent from my iPhone

Begin forwarded message:

From: Tandem Cares < <mailto:tandemcares at updates.tandemdiabetes.com> tandemcares at updates.tandemdiabetes.com>
Date: September 10, 2025 at 11:01:04 AM PDT
To:  <mailto:pmaddix at comcast.net> pmaddix at comcast.net
Subject: Operating system updates for Tandem/iPhone users
Reply-To: Tandem Cares < <mailto:tandemcares at tandemdiabetes.com> tandemcares at tandemdiabetes.com>

Important information regarding recommended updates. 

If you are having trouble viewing this email,  <https://app.files.tandemdiabetes.com/e/es?s=1704016&e=15393&elqTrackId=efd74c1a1b7a40299e524d6e5aa03bea&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqak=8AF5BDA2719C232B7471E98531FD40C8F1360DB1FC1FD7F9DC54EC6A93C6DA7156BE> view the online version.

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7B18cd1e03-6e07-4359-97a1-e2f0591643e8%7D_Logo_Eloqua_Header_150w.png> 

Hi Team Tandem,

Please disable automatic updates to your operating system and do not manually update your operating system or you may lose functionality of your Tandem Mobi system.

Apple will be releasing iOS 26 soon, and we have not completed compatibility testing. We will send follow-up communication as soon as testing on iOS 26 is complete.

Starting with iOS 18.4, automatic software updates are automatically turned on. To disable automatic updates, follow the instructions below:

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	Navigate to Settings on your iPhone

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	Tap General > Software Update > Automatic Updates

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	Disable iOS updates (under Automatically Download and Automatically Install)

Please remember:

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	Always verify that a new operating system is supported before updating the software on your smartphone

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	If you use third-party mobile apps to manage your therapy, it’s important to check compatibility with the developers of that mobile app before updating your smartphone’s operating system

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	Do not install beta versions of operating systems while using Tandem mobile apps

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png> 

	Minor updates and maintenance updates (e.g., iOS 18.1, 18.2) should not be impacted and can be installed at your discretion

Timely compatibility with operating system updates is our goal. Please visit our  <https://tandemdiabetes.com/compatibility?elqTrackId=dd5a01db94ae4a649d359a19d6e64a7f&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqCampaignId=452&elqak=8AF5F977B0EB638BBBE9BC554229D5D345F70DB1FC1FD7F9DC54EC6A93C6DA7156BE> website to view our list of compatible devices and operating systems.

Important Safety Information: RX ONLY. The Tandem Mobi insulin pump with interoperable technology (the pump) and Control-IQ+ technology (Control-IQ+) are intended for single patient use. The pump and Control-IQ+ are indicated for use with NovoLog or Humalog U-100 insulin. Tandem Mobi system: The Tandem Mobi insulin pump is intended for the subcutaneous delivery of insulin, at set and variable rates, for the management of diabetes mellitus in persons requiring insulin. The pump is able to reliably and securely communicate with compatible, digitally connected devices, including automated insulin dosing software, to receive, execute, and confirm commands from these devices. The pump is indicated for use in persons 2 years of age and greater. Control-IQ+ technology: Control-IQ+ technology is intended for use with compatible integrated continuous glucose monitors (iCGM, sold separately) and alternate controller enabled (ACE) pumps to automatically increase, decrease, and suspend delivery of basal insulin based on iCGM readings and predicted glucose values. It can also deliver correction boluses when the glucose value is predicted to exceed a predefined threshold. Control-IQ+ technology is intended for the management of type 1 diabetes mellitus in persons 2 years of age and greater and of type 2 diabetes mellitus in persons 18 years of age and greater. 

WARNING: Control-IQ+ technology should not be used in anyone under the age of 2 years old with type 1 diabetes or under the age of 18 years old with type 2 diabetes. It should also not be used in patients who require less than a total daily insulin dose of 5 units of insulin per day or who weigh less than 20 pounds (9 kilograms), as those are the required minimum values needed for Control-IQ+ to operate safely.

Users of the pump and Control-IQ+ must: use the insulin pump, iCGM, and all other system components in accordance with their respective instructions for use. Failure to follow these instructions for use could result in an over delivery or under delivery of insulin.This can cause hypoglycemia (low BG) or hyperglycemia (high BG) events. Visit  <https://app.files.tandemdiabetes.com/e/er?s=1704016&lid=27&elqTrackId=1D3D0062D1FD18EF3CE3F6A038AA4DB3&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqak=8AF544AEC10B72292C1DBCFC612A0679972B0DB1FC1FD7F9DC54EC6A93C6DA7156BE> tandemdiabetes.com/safetyinfo for additional important safety information.

©2025 Tandem Diabetes Care, Inc. All rights reserved. Tandem Diabetes Care, Tandem logos, Control-IQ+, and Tandem Mobi are either registered trademarks or trademarks of Tandem Diabetes Care, Inc. in the United States and/or other countries. Apple and iPhone are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. iOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license. All third-party marks are the property of their respective owners. MAT-0803_1

  <https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Ba8f8202d-b439-43b6-b06f-bf9ad4a8ff6b%7D_logo-tandem-diabetes-care-horizontal-white_150x34.png> 

Tandem Diabetes Care respects your  <https://www.tandemdiabetes.com/legal/privacy/privacy-policy?elqTrackId=afbac74a14de4f3e99aa2b3bc7593e69&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqCampaignId=452&elqak=8AF573696BDE3B22E7C8E268FCFA66EDCF800DB1FC1FD7F9DC54EC6A93C6DA7156BE> privacy. This email was sent to  <mailto:pmaddix at comcast.net> pmaddix at comcast.net. If you no longer wish to receive these emails, you may  <https://app.files.tandemdiabetes.com/e/sl?s=1704016&elq=6387bf9cc0014bff9f18900970870624&elqak=8AF536C1347510D13D6A3E1E87868A0287E90DB1FC1FD7F9DC54EC6A93C6DA7156BE> unsubscribe at any time. 

12400 High Bluff Drive • San Diego, CA 92130 • USA

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