• Ariel Warren, RDN, CDCES

3 Steps to Fix "Signal Loss" Alert with Dexcom G6 CGM Sensors

If you just want the quick steps (no pictures) click here.

If you are visual person, you can watch the video below.

Hi my diabetic friends,

Okay. So you are super pumped for your new Dexcom G6. You love the zero calibrations (although you are still a bit leery, and find yourself still testing your blood here and there just to double-check), but how often are you seeing the Signal Loss Alert?

Help is right! If you are normal diabetic, this alert is super annoying/frustrating. Well, as a Diabetic, a Diabetes Educator, and a Dietitian, I have been investigating how to stop this annoying Signal Loss from happening with your new G6. And this system works extremely well. After I go through these 3 steps, my phone seems to greatly increase it's range of signal (I'm talking 40+ feet range).

The purpose of this post is to educate you how to reduce or completely stop the annoying "Signal Lossl" alert when you are using the new Dexcom G6 (with pictures).

3 Steps to Fix "Signal Loss" Alert with Dexcom G6


After talking to the Dexcom Tech Rep, he explained that when you have the G5 AND the G6 app running at the same time on your phone, it can decrease how well your G6 app and bluetooth signal works.

Simply, lightly press and hold your G5 app (or any app) to make all the apps become "shaky" with the little x in the left hand corner.

Next, tap on your G5 app again to delete it.

If you don't have the G5 App on your phone, ignore this step.


After deleting your G5 app, try turning off and back on the bluetooth setting on your phone. This is a rather simple procedure, but may be all your Dexcom G6 needs to work better. See pictures below.

First swipe up from the bottom of your screen to access your Bluetooth option. Tap on the Bluetooth button to turn it off (it will be a light grey when it is turned off).

Once it has been turned off (light grey), then select the bluetooth button again to turn it back on (should be bright blue).

3. reset NETWORK settings.

This last step takes a tiny bit more effort, but the good news is that this step will either make your G6 start working OR it will notify you that your G6 can not pair with your current transmitter and needs to be replaced.

If pairing with your transmitter does not work and it is before the full 10 FDA-approved days, then you can call Dexcom Tech Support to replace your bad G6 sensor sent (1-888-738-3646).

Each G6 sensor is valued at $164.00, so definitely call Dexcom Tech Support if you are not getting the full 10 days.

Step-by-Step. How to Reset your network Settings with iOS.

1st. Select 'Settings' (light and dark grey wheel)

2nd. Select 'General' (dark grey background with a white wheel)

3rd. Scroll all the way down until you see 'Reset'. It should be the second to the very bottom button. Tap on it.

4th. Select 'Reset Network Settings'. This will reset your phone.

5th . Your phone will then ask for your pass-code. Then, your phone will then reset (turn off then back on).

7th. Once your phone turns back on, it will ask for you to join a network for internet and enter a password.

8th. Tap on your G6 app. It should then immediately try to pair with the transmitter connected with you current sensor on your body. If it is unable to pair, know that this issue is more than bad connection, but it is a bad sensor.

Call Dexcom Tech Support (1-888-738-3646) to let them know of each step you went through to get to this point. Dexcom should send you a new sensor (remember, each individual sensor is valued at $164.00)

IMPORTANT NOTE: Always. Let me repeat, ALWAYS keep your sensor code (the 4 digit code next to the QR code on that you peel off your G6 sensor).

Recently, I had a 'Signal Loss' that seemed to last forever, BUT when I reset my Network Settings, and I got a transmitter than was unable to pair, I was able to tap 'Start New Sensor' and use that same 4-digit sensor code again. Dexcom still gave me a new sensor due to my troubles, but I was able to get an extra 10 days out the restart of my sensor that was not working originally. That was a G6 sensor that works for almost 14 days total. Win-Win!

I will say however, if you are worried about not being to use a sensor for 2-3 weeks, guess what, the insertion process is much MUCH less painful that the G4 and G5 insertion process. I would say that it is equal to a quick set or a mio set. It's so nice!! And the G6 is quite small and flat.

G6 Inserter (left) vs G4 & G5 Inserter (right)

With the G6, I don't mind changing out my sensor, and because there are zero calibrations needed, I can even put in a new sensor right before bed, and have it start calibrating 2 hours later (after warm-up) in my sleep, literally.

I'm not at all affiliated with Dexcom, I just appreciate a good product.

STAY TUNED! We will talk about the upcoming Basal-IQ with Tandem X2. As a diabetes educator, I have access to it now and will start it later today. I'm super excited about this feature. I will also be wearing the Medtronic Stand Alone Guardian Sensor in order to compare it to the Dexcom G6 Sensor.

Works Cited (for Inserter picture)

Chaugule, S., & Graham, C. (2017). Cost Effectiveness of G5 Mobile CGM Compared to SMBG for Type 1 Diabetes patients from the Canadian Perspective. Canadian Journal of Diabetes,41(5). doi:10.1016/j.jcjd.2017.08.211

♥ ♥ ♥ ♥

As always, if you are having trouble with your diabetes and/or weight loss, email me or visit my website so we can figure out a customized game plan based entirely on you. I'm 100% here for you and understand all your frustrations because I am a T1D, a Diabetes Educator, and a Registered Dietitian.

When we talk, I will look in detail at what, when, and the amount you are eating, along with what you are doing for exercise (or not doing, we'll be honest with each other). Together we will analyze your blood sugar (use your Dexcom Clarity reports or Care Link) and together we will decipher why you are getting your frustrating highs and lows. After a single session, you will have answers and a much better clarity of why your blood sugars react they way they do to your food, exercise, and lifestyle.

After talking, we will stay in touch, and you will have direct access to me for any questions. I deeply care about each and everyone of my patients.

If you just have a general question, send me an email and I will get back to you within 24 hours of the following business day.


Your T1D friend, Diabetes Educator, & Registered Dietitian

Ariel Warren, RD, CD, T1D

♥ ♥ ♥ ♥


3 Steps to Fix "Loss Signal" Alert with Dexcom G6

In the order below.

1. Delete G5 App. Dexcom Rep said that many patients still have their old G5 app, make sure to delete this once you are using your G6 app, it can help you get a better connection.

2. Turn off and back on your Bluetooth. (simple but can be all your G6 app needs)

3. Reset NETWORK settings.

Settings > General > Reset (2nd to the last button) > Reset Network Settings

After your phone turns back on from the reset, it will ask you to rejoin your current interment network, next tap on your G6 app. It should then immediately try to pair with the transmitter that is currently connected with the sensor you are wearing. If it is unable to pair, know that this issue is more than bad signal, but it is a bad sensor. Call Dexcom Tech Support to get a new sensor (individual sensors are valued at $164).

#Dexcom #G6 #SignalLoss #type1diabetes #CGM