Class II U.S. Food and Drug Administration

Brand Name: Tandem t:slim mobile application Product Name: t:slim recall: A beta (early-release) version of the iOS application

Recall published 18 days ago

A beta (early-release) version of the iOS application, version 2.13 (TestFlight) had a software issue preventing successful pairing of the t:slim application with Abbott FreeStyle Libre 3 Plus (FSL3P) continuous glucose monitoring (CGM) sensors, resulting in the insulin pump being unable to establish a near-field communication (NFC) connection with the CGM and requiring FSL3P users to use their t:slim insulin pumps in manual mode. FSL3P users are unable to access their CGM's glucose values from within the t:slim app and cannot use their pumps in automated control (closed-loop) mode, which could lead to users experiencing hypoglycemia or hyperglycemia.

The hazard: Device malfunction

This is a device recall, and in FDA language that usually means a correction rather than a removal: the device stays in use and the manufacturer fixes, patches or re-instructs.

What the notice says: A beta (early-release) version of the iOS application, version 2.13 (TestFlight) had a software issue preventing successful pairing of the t:slim application with Abbott FreeStyle Libre 3 Plus (FSL3P) continuous glucose monitoring (CGM) sensors, resulting in the insulin pump being unable to establish a near-field communication (NFC) connection with the CGM and requiring FSL3P users to use their t:slim insulin pumps in manual mode. FSL3P users are unable to access their CGM's glucose values from within the t:slim app and cannot use their pumps in automated control (closed-loop) mode, which could lead to users experiencing hypoglycemia or hyperglycemia.

Why it matters: The device may not perform as intended — a mechanical failure, a software defect, an inaccurate reading, or an alarm that does not sound. For a device someone depends on, the consequence of the failure is usually worse than the failure itself.

Symptoms and when to call a doctor

If the device supports a vital function, do not disable or remove it on your own judgement. Contact the clinician who prescribed or fitted it, and use the back-up arrangement they gave you. Go to an emergency department if the symptoms the device is meant to manage are getting worse, or if an implanted device gives an unexpected alarm or shock.

This page is general information, not medical advice. If you feel unwell, a clinician who can see you is the only person able to judge your case.

Recall details

Recall number
Z-3330-2026
Published
October 7, 2026
Risk level
Class II
Status
Ongoing
Issued by
U.S. Food and Drug Administration
Brand
Tandem Diabetes Care, Inc.
Product type
Medical devices
Units affected
177
Distribution
Nationwide
Made in
United States
Lot / code info
Lot Code: UDI-DI: 00389152470641 Software Version: 2.13 (iOS only)
UPC codes
00389152470740, 00389152470641

Products covered by this recall

Brand Name: Tandem t:slim mobile application Product Name: t:slim Mobile Application, iOS Model/Catalog Number: iOS software version 2.13 Software Version: iOS software version 2.13 UDI-DI: 00389152470740 Component: No

Check your product

The notice names 3 codes you can read straight off the package. Type the one printed on yours and the list below narrows to it.

UPC / barcode

Read the twelve digits under the barcode on the package.

  • 00389152470740
  • 00389152470641

Lot or batch code

Usually ink-stamped near the seam, the cap or the bottom of the pack.

  • UDI-DI

Codes are lifted verbatim from the FDA — Device enforcement notice. A code that is missing here may still be covered — the official notice is the complete list.

What to do about Malfunction

Tandem Diabetes Care, Inc. — This is a device recall, and in FDA language that usually means a correction rather than a removal: the device stays in use and the manufacturer fixes, patches or re-instructs.

  1. Match the model, catalogue, lot and serial numbers on your device against the identifiers listed on this page.
  2. Check whether the remedy is a software update, and if so confirm afterwards in the device menu that the version actually changed.
  3. If you are a clinic or facility, quarantine affected stock and record the correction in your recall log.
  4. Report device problems to the FDA through MedWatch — that database is where this recall came from.

Replacements, repairs and reimbursement

Device remedies run through the supply chain, so the route depends on who sold you the unit.

  • Contact the distributor or clinic named on your paperwork and quote the recall number on this page. They will tell you whether the remedy is a repair, a replacement or an instruction update.
  • If the device was billed to insurance or Medicare, the replacement is usually billed the same way; you should not face a second deductible for a recall.
  • Keep every piece of correspondence. If a recalled device caused harm, that paper trail is what a claim rests on.
  • Consumer-purchased devices such as monitors and test kits are normally replaced free, with return shipping paid.

Company contact: Tandem Diabetes Care, Inc. — 12400 High Bluff Dr, San Diego, CA, 92130-3077

The official notice

This page summarises a notice published by U.S. Food and Drug Administration. The agency notice is the authoritative version — read it before you act, and treat it as the final word if anything here looks different.

Open the FDA — Device enforcement record U.S. Food and Drug Administration recalls

Questions people ask about this recall

Why was Tandem Diabetes Care, Inc. medical devices recalled?

A beta (early-release) version of the iOS application, version 2.13 (TestFlight) had a software issue preventing successful pairing of the t:slim application with Abbott FreeStyle Libre 3 Plus (FSL3P) continuous glucose monitoring (CGM) sensors, resulting in the insulin pump being unable to establish a near-field communication (NFC) connection with the CGM and requiring FSL3P users to use their t:slim insulin pumps in manual mode. FSL3P users are unable to access their CGM's glucose values from within the t:slim app and cannot use their pumps in automated control (closed-loop) mode, which…

How do I know if I have the recalled product?

Match the codes printed on your package against the notice: UPC 00389152470740, 00389152470641; lot code UDI-DI. If the code on your package is not on that list, your unit is outside the recall.

What should I do with it right now?

Match the model, catalogue, lot and serial numbers on your device against the identifiers listed on this page.

Can I get my money back?

Contact the distributor or clinic named on your paperwork and quote the recall number on this page. They will tell you whether the remedy is a repair, a replacement or an instruction update.

Where was the recalled product sold?

It was distributed nationwide.

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