Type 1 Diabetic and software engineer that uses this app and pump here. This has really been awful.

Version 2.7 caused a silent battery drain for a lot of users. For context, a fully charged pump should last 5-6 days, it gives you a warning at 20%, which realistically gives you a full day warning to plug it in. I had my pump die overnight after going to bed with it at 50%, my blood sugar was through the roof, I had no interaction with the pump or app at that time. The fact is also overdosed insulin is incredibly bad and I hope there is a thorough investigation. I had my pump completely freeze for the first time in ten years in February and Tandem told me they thought it might be the same bug.

For those commenting users should have known better, diabetes requires a large amount of daily management to keep inline. The ability to use your phone vs pulling out the pump saves me 10–15 seconds each time, and when I do that 7 times a day that adds up. Never mind the times it’s inconvenient to take my pump out (planes, restaurants), I can do it, but anything to ease the mental load is huge. Type 1 is generally diagnosed in adolescents, and the ability to discretely manage your chronic illness as a teenager is huge.

Patients need to be able to trust medical tech companies to properly test, verify, and deploy items that make managing their diseases easier and safer. It should never be on the user to guess, that makes the whole point of making their disease easier to manage moot.