Wouldn’t they need to last the full 10 days first? 
Seriously though I have half decent luck getting 9 or 10 days. I imagine this just increases the number of service tickets I open with them.
I’m only 3 sensors in and am so disappointed in the G7. It constantly loses connection even when my phone is directly beside it, the first two didn’t last the full 10 days, and one was constantly reading false lows. I do not trust this new system. I’m going to ask if I can go back to the G6.
I am sorry to hear that. I have had much better experiences with G7 compared with G6, which failed on a regular basis (usually between days 7 and 10), including falling off due to inability to remain attached to my skin, even while using the overpatches.
In the 18 months I have been using G7 I have had only one real issue and that was a bunch of sensors that did not pair and failed one right after the other. I suspected it had something to do with the transfer of mfg to Malaysia. I don’t even use the overpatches anymore as the adhesion is really good now.
I’m with @Karl.n When you get a bad one now you just have to gut out 10 days. And a significant number of mine are deteriorating by the ten day mark. They are going to make you call Customer Service and spend an hour or more just trying to talk to somebody about a replacement. And of course they will increase the price. Groan.
I find the online tickets really efficient. I’d switch to a different brand before calling customer service.
I’ve been using G7 for 9 months now and all have lasted 10.5 days. I wonder what difference there is for those who have them not make it 20 days?
I do have issues with stable blood sugar readings the first 1-1.5 days. I would strongly suggest Dexcom allow you to insert without starting the clock on the sensor for 24 hours to allow stabilizing with the insertion site before activation (starting the sensor). This would allow for a more stable start up. The question would be can they delay the start after insertion?
You’re correct, the G7 can only remain active for 10.5 days! They automatically deactivate at that time. Dexcom hasn’t extended the life of G7 sensors yet.
I also struggle with the first 24 hours of G7 readings. Some people swear by “pre-soaking” their sensors, where they insert them and then don’t “activate” them on their device until 12-24 hours later. I haven’t tried it, but I know it is something some G6 users can do at least. If you search for “pre-soaking G7” here or elsewhere you might find more info!
I could be wrong, but I have read that once you push the insertion button the 10.5 day clock starts.
That totally could be the case. I’ve never had enough of a surplus stock to try it – with how hard insurance and Dexcom make it to get more sensors than exactly what you need, I’m not brave enough to risk it! 
And I understand on the 10.5 day current sensor life. I was more commenting on the experience I have with getting the full 10.5 days without issues. I look forward to a 15 day sensor which would extend the time between new pod start variability.
They dropped the number of sensors that have to remain alive. Their 10 day number was based on about 95% of sensors lasting that long, so 1 in every 20 fail which means that we should expect a failure on a 10 day sensor every 190 days on average; a little under twice a year.
IRC from the other discussions the failure rate at 15 days is much higher. Same product, different tests?
Absolutely no way am I going to let my endo prescribe me 15 day sensors; they fail way more often than twice a year. Most of the time I just ignore it; dealing with the Dexcom replacement process is a waste of my time and does not save me any money since I’m maxed out (particularly now on Medicare, where I max out after paying $257, which I did a month after I started Medicare!)
10 days, or “15” is marketing math. For me none of the Gx sensors have worked initially and all of them have started not working before time-of-death.
How many fingersticks do we have to do before we have established that a Gx is not working? How many calibrations of a does-not-require-calibration sensor?
I haven’t use the Abbott products but I don’t think that matters in my criticism; I’m not criticising the Gx product, the engineers, the people who did it. I’m criticising the exploitative money driven, congress owning, marketing.
I’m simply criticising BS. The G7 does not last 10 days and the 15 day G7 does not either, but of course I’m never going to try it to prove the latter.
This isn’t helped by those of us who boast how many days we have made our sensors last. So what? Some of us can’t, or for the cynical, don’t. We still have to pay.