<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I just got an email from Tandem, see below, this morning warning me not to update to iOS 26 until they\u2019ve 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\u2019t know if this upgrade will interfere with Dexcom and Libre, but there\u2019s always that possibility so personally I\u2019m 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.<div>Patricia.</div><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br>Begin forwarded message:<br><br></div><blockquote type="cite"><div dir="ltr"><b>From:</b> Tandem Cares <tandemcares@updates.tandemdiabetes.com><br><b>Date:</b> September 10, 2025 at 11:01:04\u202fAM PDT<br><b>To:</b> pmaddix@comcast.net<br><b>Subject:</b> <b>Operating system updates for Tandem/iPhone users</b><br><b>Reply-To:</b> Tandem Cares <tandemcares@tandemdiabetes.com><br><br></div></blockquote><blockquote type="cite"><div dir="ltr">\ufeff
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Important information regarding recommended updates.
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<p class="text-disclosure">If you are having trouble viewing this email, <a data-targettype="sysaction" href="https://app.files.tandemdiabetes.com/e/es?s=1704016&e=15393&elqTrackId=efd74c1a1b7a40299e524d6e5aa03bea&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqak=8AF5BDA2719C232B7471E98531FD40C8F1360DB1FC1FD7F9DC54EC6A93C6DA7156BE" title="View Online Version">view the online version</a>.</p>
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<p>Hi Team Tandem,</p>
<p> </p>
<p>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.</p>
<p> </p>
<p>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.</p>
<p> </p>
<p>Starting with iOS 18.4, automatic software updates are automatically turned on. To disable automatic updates, follow the instructions below:</p>
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<p>Navigate to <b>Settings</b> on your iPhone</p>
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<p>Tap <b>General</b> > <b>Software Update</b> > <b>Automatic Updates</b></p>
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<p>Disable iOS updates (under Automatically Download and Automatically Install)</p>
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<p>Please remember:</p>
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</td>
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<table width="100%" cellpadding="0" cellspacing="0" style="max-width:600px;min-width:300px;margin:0 auto;" class="row row-6" role="presentation">
<tbody>
<tr>
<td style="background:#ffffff;">
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
<tbody>
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<td>
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
<tbody>
<tr>
<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
<tbody>
<tr>
<td style="background-color:transparent;line-height:18px;padding:0px 30px 15px 30px;" class="elq-code-cell cell cell-0">
<div style="display:inline-block;width:100%;">
<table>
<tbody>
<tr>
<td width="30">
<img src="https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png" alt="\u2022" width="30" height="30" border="0" data-unique-identifier=""></td>
<td width="10" style="font-size: 10px; line-height: 10px;"></td>
<td style="vertical-align: middle;">
<p>Always verify that a new operating system is supported before updating the software on your smartphone</p>
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<table width="100%" cellpadding="0" cellspacing="0" style="max-width:600px;min-width:300px;margin:0 auto;" class="row row-7" role="presentation">
<tbody>
<tr>
<td style="background:#ffffff;">
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
<tbody>
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<td>
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
<tbody>
<tr>
<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
<tbody>
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<td style="background-color:transparent;line-height:18px;padding:0px 30px 15px 30px;" class="elq-code-cell cell cell-0">
<div style="display:inline-block;width:100%;">
<table>
<tbody>
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<td width="30">
<img src="https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png" alt="\u2022" width="30" height="30" border="0" data-unique-identifier=""></td>
<td width="10" style="font-size: 10px; line-height: 10px;"></td>
<td style="vertical-align: middle;">
<p>If you use third-party mobile apps to manage your therapy, it\u2019s important to check compatibility with the developers of that mobile app before updating your smartphone\u2019s operating system</p>
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<table width="100%" cellpadding="0" cellspacing="0" style="max-width:600px;min-width:300px;margin:0 auto;" class="row row-8" role="presentation">
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<td style="background:#ffffff;">
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
<tbody>
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<td style="background-color:transparent;line-height:18px;padding:0px 30px 15px 30px;" class="elq-code-cell cell cell-0">
<div style="display:inline-block;width:100%;">
<table>
<tbody>
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<td width="30">
<img src="https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png" alt="\u2022" width="30" height="30" border="0" data-unique-identifier=""></td>
<td width="10" style="font-size: 10px; line-height: 10px;"></td>
<td style="vertical-align: middle;">
<p>Do not install beta versions of operating systems while using Tandem mobile apps</p>
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<table width="100%" cellpadding="0" cellspacing="0" style="max-width:600px;min-width:300px;margin:0 auto;" class="row row-9" role="presentation">
<tbody>
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<td style="background:#ffffff;">
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<td>
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
<tbody>
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<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
<tbody>
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<td style="background-color:transparent;line-height:18px;padding:0px 30px 15px 30px;" class="elq-code-cell cell cell-0">
<div style="display:inline-block;width:100%;">
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<tbody>
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<td width="30">
<img src="https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Bc9e5ef9a-85ee-4200-94bc-eed93f8b4889%7D_green_check_30x30.png" alt="\u2022" width="30" height="30" border="0" data-unique-identifier=""></td>
<td width="10" style="font-size: 10px; line-height: 10px;"></td>
<td style="vertical-align: middle;">
<p>Minor updates and maintenance updates (e.g., iOS 18.1, 18.2) should not be impacted and can be installed at your discretion</p>
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<table width="100%" cellpadding="0" cellspacing="0" style="max-width:600px;min-width:300px;margin:0 auto;" class="row row-10" role="presentation">
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<td style="background:#ffffff;">
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
<tbody>
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<td style="background-color:transparent;line-height:18px;padding:5px 30px 10px 30px;" class="elq-code-cell cell cell-0">
<div style="display:inline-block;width:100%;">
<table width="100%" style="-webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; margin-top: 0; margin-right: 0; margin-bottom: 0; margin-left: 0; mso-table-lspace: 0pt; mso-table-rspace: 0pt;" border="0" cellpadding="0" cellspacing="0">
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<td style="font-family: 'Montserrat', Verdana, sans-serif; text-align: left;">
<p>Timely compatibility with operating system updates is our goal. Please visit our <a href="https://tandemdiabetes.com/compatibility?elqTrackId=dd5a01db94ae4a649d359a19d6e64a7f&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqCampaignId=452&elqak=8AF5F977B0EB638BBBE9BC554229D5D345F70DB1FC1FD7F9DC54EC6A93C6DA7156BE">website</a> to view our list of compatible devices and operating systems.</p>
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<table width="100%" cellpadding="0" cellspacing="0" style="max-width:600px;min-width:300px;margin:0 auto;" class="row row-11" role="presentation">
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<td style="background:#ffffff;">
<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
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<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-12 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:100%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:480px;min-width:-webkit-calc(100%);min-width:calc(100%);" role="presentation">
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<div style="display:inline-block;width:100%;">
<h6><strong>Important Safety Information:</strong> 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. <strong>Tandem Mobi system</strong>: 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. <strong>Control-IQ+ technology</strong>:
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. </h6>
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<p class="text-disclosure"><b>WARNING:</b> 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.</p>
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<div style="display:inline-block;width:100%;">
<h6>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 <a target="_blank" title="" href="https://app.files.tandemdiabetes.com/e/er?s=1704016&lid=27&elqTrackId=1D3D0062D1FD18EF3CE3F6A038AA4DB3&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqak=8AF544AEC10B72292C1DBCFC612A0679972B0DB1FC1FD7F9DC54EC6A93C6DA7156BE" data-targettype="webpage" style="color: rgb(0, 156, 232); text-decoration: none;">tandemdiabetes.com/safetyinfo</a> for additional important safety information.</h6>
<h6><br></h6>
<h6>©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</h6>
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<table width="100%" cellpadding="0" cellspacing="0" role="presentation">
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<td style="text-align:left;vertical-align:top;font-size:0px">
<table class="tolkien-column tolkien-column-4 col col-0" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:33.33333333%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:160px;min-width:-webkit-calc(33.33333333%);min-width:calc(33.33333333%);" role="presentation">
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<img src="https://files.tandemdiabetes.com/EloquaImages/clients/TandemDiabetesCareInc/%7Ba8f8202d-b439-43b6-b06f-bf9ad4a8ff6b%7D_logo-tandem-diabetes-care-horizontal-white_150x34.png" alt="Tandem Diabetes Care" height="32" width="140" style="width:100%;height:auto;max-width:150px;" data-unique-identifier="">
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<!--[if (gte mso 9)|(IE)]></td><td width="33.33333333%" style="text-align:left;vertical-align:top;font-size:0px"><![endif]-->
<table class="tolkien-column tolkien-column-4 col col-1" cellpadding="0" cellspacing="0" style="vertical-align:top;display:inline-table;background:transparent;table-layout:fixed;font-family:Verdana, Arial, Helvetica, Geneva, sans-serif;font-size:12px;color:#00354E;max-width:100%;width:33.33333333%;width:-webkit-calc(230400px - 48000%);width:calc(230400px - 48000%);min-width:160px;min-width:-webkit-calc(33.33333333%);min-width:calc(33.33333333%);" role="presentation">
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<td style="height:15px;background-color:transparent;line-height:15px;" class="hide-in-mobile elq-space-cell cell cell-0">
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<td style="background-color:transparent;line-height:18px;padding:30px 0px 30px 0px;" class="elq-header-footer-cell cell "><span>
<div style="text-align: center;">
<p class="text-disclosure">Tandem Diabetes Care respects your <a href="https://www.tandemdiabetes.com/legal/privacy/privacy-policy?elqTrackId=afbac74a14de4f3e99aa2b3bc7593e69&elq=6387bf9cc0014bff9f18900970870624&elqaid=570&elqat=1&elqCampaignId=452&elqak=8AF573696BDE3B22E7C8E268FCFA66EDCF800DB1FC1FD7F9DC54EC6A93C6DA7156BE" target="_blank">privacy</a>. This email was sent to <span contenteditable="false">pmaddix@comcast.net</span>. If you no longer wish to receive these emails, you may <a data-targettype="sysaction" href="https://app.files.tandemdiabetes.com/e/sl?s=1704016&elq=6387bf9cc0014bff9f18900970870624&elqak=8AF536C1347510D13D6A3E1E87868A0287E90DB1FC1FD7F9DC54EC6A93C6DA7156BE" target="_blank" title=""><u>unsubscribe</u></a><span> at any time. </span></p>
<p class="text-disclosure">12400 High Bluff Drive \u2022 San Diego, CA 92130 \u2022 USA</p>
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<img src="data:image/gif;base64,R0lGODlhAQABAJEAAP///wAAAAAAAAAAACH5BAkAAAAALAAAAAABAAEAAAgEAAEEBAA7" width="1px" height="1px" alt="Web Bug from https://app.files.tandemdiabetes.com/e/FooterImages/FooterImage1?elq=6387bf9cc0014bff9f18900970870624&siteid=1704016" /></div></blockquote></body></html>