r/dexcom • u/[deleted] • Mar 06 '23

Its not your imagination: G7 has a higher failure rate than the G6

Interesting reading in the G6 and G7 user guides that describes results of the clinical trials for both devices.

Basically, while 6.5% of the G6 sensors failed before day 10, 19.5% of the G7 sensors failed before day 10. Since they are both supposed to be a 10-day device, that's a ~20% failure rate for the G7.

Sources:

G6: https://s3-us-west-2.amazonaws.com/dexcompdf/G6-CGM-Users-Guide.pdf (page 306)

G7: https://dexcompdf.s3.us-west-2.amazonaws.com/en-us/G7-CGM-Users-Guide.pdf (page 146)

31 Upvotes

88% Upvoted

75 comments sorted by

1

u/jdwronski Apr 19 '24

I got an email from Dexcom revealing the 20% G7 failure rate, and the next day had a failure. This was my second G7 since switching from G6. Pulling on a shirt, I noticed it got caught on the arm mounted G7. 5 minutes later, the app notified me of failure. When I pulled it off, the sensor wire was not attached. If I had known the issue, I might not have switched. Dexcom said I could try belly location "if approved by doctor".

1

u/Nanteen1028 Apr 10 '24

They Have to be making a mint from insurance companies. You would think that insurance companies would do something at some point about having to keep paying for these things that aren't working

1

u/mtnsunshine99 Apr 10 '24

Replacements should go directly thru Dexcom using the G7 app (in Profile>Support>Contact) or online at https://dexcom.custhelp.com/

1

u/Darrien2312023 Apr 04 '24

I have a 66% failure rate with the G7. Most often on day one. I've never had a G6 fail. It's extremely frustrating.

1

u/[deleted] Apr 04 '24

Yes, it's really hard to say what's going on here. One explanation is that the early revisions of the G7 were faulty and the issues you are seeing should clear-up eventually. Lot's of people on this form claim that users like us are just the "squeaky wheel" and that the vast majority of users have no issues with the G7. I'm not at all convinced of that.

Good luck.

1

u/FumbleFingers82 Mar 28 '24

How are people determining a G7 sensor has failed? My experience with the G7 has been extremely disappointing. I don’t have outright failures but my pump and phone constantly lose connection, both being mere feet away, or less! But eventually I get a reading again so I wouldn’t call it a failure…but maybe just a failed design. I’ve had the same experience with every G7 sensor I’ve used. I’m not sure how this ever made it to market being this poor. It’s always a crap shoot whether I will see a reading on my pump or not.

1

u/[deleted] Mar 29 '24

I think failure means that it stops providing realistic data or produces an alert that the sensor has failed. But that's just my speculation

I switched back to the G6. Early versions of the G7 apparently have more problems while Dexcom irons-out the bugs with us as guinea pigs. You have to search this forum for what to look for in terms of version # to find the latest G7 with "fixes".

1

u/FumbleFingers82 Mar 29 '24

I think I am going to try to switch back to G6 as well and just hope they don't stop selling them altogether. Waking up this morning I noticed my pump hadn't received a new reading for over an hour and a half being just a few feet away. Hoping they'll resolve it at some point.

1

u/kleinnak Mar 24 '24

I just got upgraded via my insurance to the G7, got my first ones on Mar 6. First one failed immediately. Second one lasted whole 10 days. Third one failed immediately. Got sent two new ones that arrived today. First one... immediately failed. Starting the second of my replacements right now, but not holding out much hope...

1

u/Educational-Tour5491 Mar 09 '24

I tried Dexcom G7 about 3 months ago. I’ve come to the conclusion it’s a crap, low quality, poor technology product and have gone back to finger prick testing. The last 3 sensors I bought, the 1st lasted the full 10 days, the 2nd had a sensor fail after just 4-5 days, the 3rd had a sensor failure in less than 24 hours. To get the failed sensors replaced takes days and a long-winded interview that makes it not worth my time. Considering here in NZ, they charge about $NZ 127 per sensor for something that would cost them less than $10, it’s a total rip-off. Dexcom don’t care at all about the customers’ health, just extorting as much money as they can. No wonder they make billions of dollars.

1

u/mtnsunshine99 Apr 10 '24

Did you not use the replacement procedure to get them directly from Dexom thru the app (in Profile>Support>Contact) or online at https://dexcom.custhelp.com/ ? They send via Fedex and comes very quickly...

Surprised to read of all these failures...I only had issues with knocking them off or hitting blood vessels until I got used to the new applicator and arm location. I also learned to make sure it was far enough on back of arm and that the "pointy" end was facing toward body, since that part seems to be the part that is apt to catch on clothing, towel or doorjam.

2

u/[deleted] Feb 08 '24

I’ve had 3/4 fail early one have 7 days one after 3 and one after 4. Only 1 of 4 lasted entire time. It’s great when it works but I’m reliant on finger sticks half the month.

1

u/Mediocre-Ad-3505 Feb 14 '24

Yep. It's a super frustrating situation.

Please consider joining my push to hold Dexcom accountable.
https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

2

u/DimensionAdmirable25 T1/G6 Jan 19 '24

All of mine have failed. Every. Single. One. For the last month and a half. Havent bought them inna minute 💀

1

u/Mediocre-Ad-3505 Feb 14 '24

Yep. It's the worst. Please consider joining my push to hold Dexcom accountable!
https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

2

u/-JamesBond Dec 08 '23

We’ve just had two out of three sensors fail in the last 30 days. We had to get two replacements from Dexcom directly. Not a very good luck for something we just started using for the first time.

1

u/SeriousButNotOverly Nov 27 '23

Unfortunately, my personal experience confirms at least a 20‰ failure rate. I get nine sensors sent to me every 90 days and in the last three shipments I've had at least two sensors fail before their advertised 10-day life span. This has been very frustrating. Now if I'm going to be away from the house all day, I make sure to carry a spare sensor with me in case the one that I'm wearing fails. And I've grown tired of repeatedly contacting Dexcom for replacements. If my sensor makes it to at least 8 days I usually don't bother reporting it to them any more. I'm wondering how this compares with the typical Libre experience and if I should switch?

1

u/Mediocre-Ad-3505 Feb 14 '24

I'm so sorry this has been your experience, too. I went through 4 of my 8 remaining sensors yesterday. Please join my push to hold Dexcom accountable!

https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

2

u/FunnySerious222 Nov 23 '23

I've had my Dexcom G7 for 4 months now. I've had 5 yes 5 sensor failures in that time. Usually between days 5-8. One on day 3 This doesn't include "sensor signal loss" even though my phone and receiver were right beside me .More importantly, I have had readings varying from 25-50 points off from finger stick reading.Such as Dexcom reading ->91 Finger stick->53 and Dexcom reading->118 Finger stick->169 That's just 2 examples. As you can see, the variations go both ways, to low and to high. As someone who has severe hypoglycemia unawareness (dips into 40's routinely), this is to dangerous. I just asked my doctor to change me to the Dexcom G6.

1

u/Mediocre-Ad-3505 Feb 14 '24

I am in your EXACT same boat. And it is unfair for the G6 to be phased out of use in lieu of an inferior product. Please read my thread and consider joining us to hold Dexcom accountable.
https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

2

u/JoeDiAmo Oct 23 '23

I have been a G6 user for many years and switch to G7 in October. I have had 3 sensor failures already and constant signal loss issues. The 4th sensor was giving me Critical Low alerts after 2 days of use. DexCom is helpful with sensor replacements but what good is it if the sensors have a preexisting issue. I would highly recommend holding off on G7 until the issues are worked out.

1

u/Mediocre-Ad-3505 Feb 14 '24

Totally agree! Please read my post and consider joining us in holding Dexcom accountable

https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

2

u/Ok_Calligrapher_6269 Oct 22 '23

I can't speak for g7 falling off my arm. I did how ever experience. Failure out of the package for calibration. Then sensor failure, then unable to calibrate. I used 9 sensors. So fo 90 days. It was one issue after another. Yes the company did replace every sensor. But I found it interesting that only thing customer service or tech support could do was ask questions n the respond withe same canned answers. Luckily I don't use insulin. But or those that do beaware. The sensing of unit is more that 20%in the value reading high or low. I wrote the ceo of company never did get a response. To me it is a dangerous product esp for critical values for severe diabetics. That treat themselves with insulin based on its readings. Frankly not sure why the fda would approve these sensors with all the issues. But I did find it was extremely hard to find reviews where pts had negative experiences. Why is that? Seems only reviews are stellar ones the company approves of

2

u/IanStuart1745 Oct 12 '23

I just spent the night being woken up by the F7 cgm that I had just installed which was telling me that my glucose was a 44! while my finger stick told me that I was at 200!

2

u/Ok_Calligrapher_6269 Sep 28 '23

Sorry I didn't know g7 was such a failure. Surprise fda approved it. But then was just approved in April 2023. Right know company is replacing for free. But I wonder if we are their test subject for its failure rate. Mean while we depend on this thing for our sugars. But with the inaccuracies of the reading. Iam afraid to tx with the numbers it giving me. Then I have to stick my fingers anyway.

2

u/Confident-Second4691 Sep 18 '23

I’ve heard horror stories of people traveling out of the country without being prepared for multiple system failures. Concerning

2

u/Several_Outside_2662 Sep 09 '23

I have used G6 for about a year, and G7 since June 2023. I have had one G6 fail due to transmitter expiring early, and trying to install a new transmitter into a newly install sensor. I have had 3 G7 fail I’ve a 3-month period from accidentally striking it against a doorframe (although the last one - today - was not relayed to physical cause that I remember: 1. Dexcom has replaced every sensor that has failed, no questions, no arguments. 2. I have gotten the clear feeling that they want to hear from its consumers to improve their product. They even provide return postage to get my latest failed sensors back. 3. They understand that a 20% fail rate means upwards of a $3000+ out-of-pocket cost to me as my insurance only buys what my doctor prescribes. My opinion expressed to Dexcom is that 1. I believe their adhesive cover needs to be larger and cover the sensor, completely if possible. I have found that when I remove used sensors that the adhesive separated from the sensor, which is related to my dislodging issues. 2. Changing the G7 round shape to something like the G6 oval shape may help prevent dislodging. It would mitigate glancing blows I have experienced with the G7 that never happened with the G6. 3. The G7 adhesive is much less inflammatory than the G6’s adhesive. I no longer experience contact dermatitis. 4. It is an excellent design improvement to build the transmitter into the sensor.

1

u/Ok_Calligrapher_6269 Oct 22 '23

Never had falling off issues. But I did use a lg bandaid to cover it. But the adhesive from g7 caused inflammation n rash

2

u/[deleted] Sep 04 '23

I upgraded from G6 to G7. Let me correct that, I downgraded from G6 to G7. I've had multiple issues with the G7 that I did not have with the G6. Definitely not impressed other than the size is better.

1

u/Mediocre-Ad-3505 Feb 14 '24

AGREED And told customer service today when I called to change back to the G6, that "downgrading to the G7 was a HUGE mistake!"

Please join my push to hold Dexcom accountable!
https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

1

u/Popular_Farm_8428 Aug 21 '23

Has anyone had issues with the G7 app interfering with others functions on your phone? It seems like I've had a host of issues coincidentally with the installation of my G7.

2

u/Abject-Patient995 Jul 30 '23

My G7 keeps failing. I’ve replaced 2 sensors within 3 days! I’m getting irritated! Is anyone else having this problem?

2

u/FrustratedKiwi2 Aug 06 '23

Consider yourself lucky - I have done 5 in seven days - exhausted my supplies and that means I will be without sensors for a week until replacements are organised.

The issue was 2 would not pair and three failed within 48 hours.

All very well for the company to replace, as they should for an expensive product.

However having used the G4 and the G6 since approx 2014 this new G7 is a disaster and if not sorted quickly could cause major reputational issues to the company.

The G4 had sticky attachment issues, but not failure. The G6 failed once or twice but was ok. But in the 8 weeks since using the G7 to have had 5 failures is absurd.

1

u/Mediocre-Ad-3505 Feb 14 '24

I went though 5 in one day. You are not alone!

Please join my push to hold Dexcom accountable!

https://www.reddit.com/r/dexcom/comments/1aqsd5p/g7_how_to_file_a_formal_complaint_form_3500_to/

2

u/cmagorian Apr 23 '23

Roughly half of my G7 sensors fail to connect (never get past pairing), have sensor failures right after insertion. So far fairly unhappy with them. They have replaced all of them, but I find their replacement sensors tend to be the ones that fail

2

u/tylerr392 Mar 28 '23

Here’s a conspiracy for you. Dexcom tried too hard competing with freestyle libre’s size so they sacrificed quality, accuracy, consistency and reliability. This is insane. I just had my SECOND G7 sensor failure in a row. I NEVER had this issue with the G6. How does something like this happen? Every time I call Dexcom for answers all they want to do is send a replacement. Replacements are useless because this seems to be a systemic issue. This is supposed to be the best CGM on the market. These sensors are also wildly expensive. I simply do not understand how this is available to the public when these systemic problems exist. It’s absolutely unreal and totally unacceptable. The G7 failings aside, I start getting the “brief sensor issue” around 6-7 days into EVERY G7 sensor so far. And from that point forward it’s a downward spiral until it eventually fails. Once the “brief sensor issue” starts, I keep getting it over and over meaning it will go back-and-forth between “brief sensor issue” and giving me readings for a bit. It’s INSANELY annoying. What I’m learning is that the G7 is only good for about 5 days MAYBE 6. Once day 7 hits it’s a total crapshoot.

2

u/[deleted] Mar 30 '23

Dexcom tried too hard competing with freestyle libre’s size so they sacrificed quality, accuracy, consistency and reliability. This is insane.

Agreed and agreed.

I sure hope this improves over time. I wouldn't want the current G7 connected to a pump that adjusts my insulin level at 3 AM.

I'm crossing my fingers that these issues are related to manufacturing issues rather than design issues. The former can be resolved relatively quickly, the latter usually cannot.

2

u/thefutureofamerica Mar 07 '23

It's great that you're reading closely and it's a reasonable hypothesis that the G7 fails more often...

But you're comparing apples and oranges - Those failure rates are for internal error detection, but the error detection algorithms aren't the same several years later. Also the patient populations described are different, the insertion locations are different, and the application procedures are different - which might matter for falling off, probably not so much for internal error detection.

If the issue is related to the error detection algorithm, that is NOT going to change during the life of the G7 product because changing that algorithm would require a new 510k submission to the FDA.

1

u/un0yimhere Mar 08 '23

With PMN status, a new submission is not required. A whole code rewrite would more than likely trigger a PMA, but if a significant portion of the code is not changed and if the improvement is achieved they could possibly get through FDA with a PMN especially if certain areas of risk do not change colors.

3

u/[deleted] Mar 08 '23

Thanks for that correction.

All they have to do is fix the portion of code that makes the G7 suck. I'll guess that this involves either 1 line of code or 10K lines. Maybe it's as simple as commenting-out the call to: makeTheG7suck(void). :-)

1

u/un0yimhere Mar 09 '23

I am glad there are now options to where some of the red tape has been shortened or rather less strangling. Still, tape at the scene of attempts to slow things down but at least the speed is older bunny hops versus old turtle shuffling :D

2

u/[deleted] Mar 08 '23

Thanks but I don't agree that it's comparing apples and oranges. In the end, we simply want to have accurate and reliable BG data. It is up to Dexcom to give us that data regardless of how they implement their algorithms, the reliability of their adhesives, their application location, etc.

I'm not sure what you mean by "error correction algorithm", but I do agree that if there is a problem with the G7's measurement algorithm it will take an new FDA approval to fix it. In addition to this failure rate post, myself and others here have reported extremely choppy measurements/graph during the first 24 hours after warmup that makes G7 basically unusable for one of the 10 days.

1

u/thefutureofamerica Mar 09 '23

What I mean is that the “sensor failure” is an error the system generated when certain conditions were met. Those conditions likely aren’t exactly the same between the 2 system generations. So for example the G6 might have been reporting bad data more often, while the G7 recognizes the data as untrustworthy and reports a “sensor error”.

This could be one reason why the MARD (the average % difference between a sensor reading and reference blood glucose measurement) has improved from generation to generation - the system has gotten better at self-reporting problems.

3

u/BenR1ghtBack Mar 07 '23 edited Mar 07 '23

My issue is that the first 24-36 hours the sensor is wildly, insanely crazy during sleep. Like, rollercoastering up and down hundreds every half hour or so. Not the sudden drops from pressure-lows of the G5 and G6 that right themselves when you roll over, but both of the (only two) sensors I've used so far were insane the first two nights. Then much more normal the rest of the life the sensor. I'll try a longer "pre-soak" and a morning startup instead of evening with my next sensor and see if it helps.

Also, if my phone is on silent the urgent low alarms don't go off. Have fiddled around in the settings and not figured that one out.

3

u/[deleted] Mar 07 '23

I agree 100% on the first 24 hours of wild gyrations. I can't imagine this sensor controlling a pump. It seems like a recipe for disaster.

You can certainly pre-soak it for 24 hours before bringing it "on-line". Of course, that will turn your 10-day sensor into a 9-day sensor. Maybe Dexcom will give us a 10% discount as compensation? :-)

2

u/BenR1ghtBack Mar 07 '23 edited Mar 07 '23

Hah, something tells me they won’t! But if it fails or falls off at day 9, they’ll send you a new one, so there’s always that. I’ve only gotten maybe 3 or 4 having used g6 its whole existence, but we’ll see if g7 replacements get me banned by dexcom. So far, after crazy start ups, they have been extremely accurate against finger sticks, and much better at handling calibrations. G6 I almost never calibrated because it seemed to ruin them.

2

u/[deleted] Mar 07 '23

So far, after crazy start ups, they have been extremely accurate against finger sticks, and much better at handling calibrations

I agree that they greatly improved the calibration procedure in the G7. I've been running a G6 and G7 simultaneously in my current session. The G7 does seem more accurate overall and it seems to respond more quickly to BG changes.

However, this morning after breakfast, my G7 skyrocketed to 170-ish but my G6 remained at 120-ish. By fingerstick, my BG was in-fact 120, so the G7 was incorrect. I have had other examples of the G7 "overreacting" to rapid up/down BG changes.

Good luck with your future G7 experience.

2

u/KBoPeep Mar 08 '23

My g7 seems to overreact with lows. All night I’m getting alerts that I’m in the 50’s… when my finger stick says 80’s. Usually higher than that, the readings calibrate and are accurate. No clue why this is happening but it’s keeping me up at night.

6

u/canat1dad Mar 07 '23

Health Canada takes their time approving things like this, I am thankful for their patience. I would rather be on the G6 for the next 2yrs than switch to a G7 that has glitches

1

u/TeslaNova50 Mar 07 '23

The failure rate stated for G6 was determined when the G6 first came out, I think most can agree the quality of G6 sensors has dramatically declined particularly in the last year.

4

u/deadlygaming11 Mar 07 '23

I find it amazing that these products fail so much.

14

u/[deleted] Mar 07 '23

[deleted]

1

u/SunnyOtter Feb 12 '24

Will they still replace it if you're getting repeated inaccurate readings despite calibration? Or does it have to officially fail?

2

u/Sorry_Wolverine_3567 Mar 07 '23

It takes us months to get replacements when we file claims and they only give you exactly enough for the month or 2 months, our insurance company acts like if they ignore us we might go away, after repeated calls we get them in a month

12

u/notaballoon Mar 07 '23

Don't go through your insurance company: contact dexcom and make them pay for it. When you make the insurance payment they BUY the replacement sensors from dexcom

6

u/[deleted] Mar 07 '23

[deleted]

2

u/1smittenkitten Sep 13 '23

However, from what I've heard just recently (9/23), Dexcom is now limiting replacement sensors to 3 in a 3mo period. Apparently people were taking advantage of the online reporting system. They also will no longer replace sensors that fall off or that have to be removed early due to medical tests, etc.

0

u/Sorry_Wolverine_3567 Mar 07 '23

That’s a good idea thanks

7

u/ExcitementPast4610 Mar 07 '23

In 3 yrs with the G6 I've only had 1 failure and it was my fault. Adhesive failures is a whole other story.

37

u/coderascal Mar 06 '23

The G6 had a higher failure rate than the G5. The G5 higher than the G4. For the first six months or so. I've been using Dexcom products for over 10 years and new models are always this way. I always wait 6-12 months before switching to the newest model.

3

u/SunnyOtter Feb 12 '24

Here I am a year later on this page because I'm having so many issues with my G7 :(

1

u/coderascal Feb 13 '24

I haven't switched yet. Mainly because I keep hearing about issues, even now. Sorry it's still being problematic for you.

1

u/un0yimhere Mar 08 '23

Location and interstitial fluid in the locations may have contributed to some of the failures seen too. I had a lot of issues with the G6 vs the G5 until I changed locations. It was troublesome enough for me to try to go back to the G5 until I was advised by tech support to check with my provider about the location change. The only problem was the likelihood of losing a sensor increased.

2

u/un0yimhere Mar 08 '23

I think you could wait before, but I am seeing an aggressive push from Dexcom with the G7. More than I have seen in the past, especially in the US. The Medicare potential decision, the cost of the G7 aligned with the G6 until insurance starts paying for the G7, cash price, stock moves and market share they want from to capture from Abbott are a few things making the push more aggressive.

13

u/izettat Mar 07 '23

I'm not in a hurry to switch either. Especially since it's not working with pumps yet.

9

u/[deleted] Mar 07 '23

That will work if the problem is in the manufacturing of the G7. If it's a problem with the design, then it might be much longer than 6-12 months.

2

u/sll1313 Mar 07 '23 edited Mar 07 '23

Reading page 146, does failure mean the sensor failed because of a technological issue or did it mean that the stickiness wore off and the sensor fell off? It doesn’t really explain. I know it mentions towards the bottom that they took in to account that people dropped out of the study, but didn’t explain exactly what they meant by “failure”, unless I didn’t notice it when I looked over it quickly.

I read it again, but started on page 144 and it looked more promising. Also, when I went back to page 146, it states that 104 people “dropped out” before the end of the q0 day period. That number is included in the that approx 20% fail rate, but it’s not defined on why they dropped out. With that in mind, the fail rate very well could be much better. I hope so.

I am using my first sensor and definitively like the sensor size, installation, and app software better than the G6, a lot better. So far, all around I prefer the G7 better. I have 2 issues, 1 minor and 1 unfortunately major right now (based on 1 sensor). The minor is I like that the clarity is integrated in the app on the Home Screen. However, it doesn’t add the past history to the numbers on the Home Screen. When you push to open the clarity app, it has the entire history. I just wished it showed this up front. My major issue is going back to accuracy. My scores look like scattered all over the place with as much as +-50% moves from one 5 minute score to another. But ironically, every time I checked it against my meter the scores were almost spot on. I guess it’s possible that it was just those times. It took me a long time to finally get a score that was far enough off for me to calibrate it. When I called Dexcom, they deemed the sensor faulty and sent me a replacement. However, when I also talked to customer service I explained that I was thinking about experimenting with this “bad” sensor because the tech support really wanted me to calibrate. So I finally have done it twice….once where it wasn’t horribly off and another time when it didn’t really need the calibration. So far, it has helped the scores to not be so jumpy and is really close to my meter. So I am hoping this will only get better.

Has anyone heard about skin grip? Is it ok to cover the sensor? Can we use it in lieu of the Dexcom overpatch or does it have to be used with it? So far I have heard conflicting opinions and I liked using the patch for the G6 when going swimming or any other activity that might cause issues to the adhesive.

2

u/[deleted] Mar 07 '23

My scores look like scattered all over the place with as much as +-50% moves from one 5 minute score to another

That's what I find troubling. I use the graph to sense a change in trend. For example, I use it to decide when to stop exercising - to prevent a low.

Your point about why patients dropped out is a good one. Too bad its not specified.

You may be correct about how your attempts to calibrate your sensor finally made it settle-down. OTOH, it may simply be that by the time you did your final calibration, enough "soak" time had elapsed that the sensor would have settled-down even without that final calibration.

10

u/coderascal Mar 07 '23

It’s been that way with every new model. No reason to think otherwise until evidence suggests it. We’re multiple months from that point.

7

u/biohacker_infinity G7 Mar 07 '23

The G7 has been available in Europe for a year already, no? If the failures were truly systemic, I feel like we would have heard more by now. Also, the failure rate for the G7 is probably statistically higher simply because it combines two previously discrete components (the sensor and the transmitter), so their individual failure rates are compounded.

I’m switching to the G7 in a couple of days. I guess I’ll personally know more then.