Connection Bluetooth Quad Ci

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jm charlier

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May 29, 2026, 9:34:14 AM (5 days ago) May 29
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Hello. 
I recently purchased a Mares Quad Ci dive computer. I'm having trouble establishing a Bluetooth connection between my Windows 11 PC and the dive computer. 
 Do you have any advice on how to do this? 
 Thanks, jm

Vincent Gendron

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May 29, 2026, 1:31:19 PM (5 days ago) May 29
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Hello
The only way i found...
Download dives to subsurface CLOUD throught mobile phone
Then, on PC, with subsurface, download dives from cloud to app....


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Rick Balsano

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May 29, 2026, 2:53:43 PM (5 days ago) May 29
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I have the much older Mares Quad and have both Bluetooth and data transfer clips. The Bluetooth one only reliable works with my phone and the cabled one works with PC.

jm charlier

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May 30, 2026, 12:13:08 PM (4 days ago) May 30
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Vincent; Rick, hello.

Thank you for your feedback.

I also couldn't transfer the dives to my Android app "SubSurface," whereas I could do it with the "Mares" app.

I just uninstalled the SubSurface app from my phone and reinstalled it. 

This time I can see the correct Bluetooth code. 

It seems to be progressing; I'll see during my next dives if they transfer. 

Thanks again. 

Best regards. 

Jm



Till Mania

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Jun 1, 2026, 5:42:43 AM (2 days ago) Jun 1
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Hello,

I was able to sync my Mares Quad CI successfully the first time after installation.
To do so, I had to enable the option to display all Bluetooth devices in the settings.

However, during the next attempt, I was unable to sync at all. Even with the option enabled, the Quad did not appear in the device list.

I am using Android 16.

P.S.: There were no issues on my iPhone.

Dirk Hohndel

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Jun 1, 2026, 11:09:14 AM (2 days ago) Jun 1
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If you had to enable the 'display all Bluetooth devices' options, my guess is that you aren't on the current version of the Subsurface-mobile app on your Android device.
Can you share the version number that you are using with us?

/D

Till Mania

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Jun 2, 2026, 3:02:47 AM (yesterday) Jun 2
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Hi!

You are absolutely right.. I had downloaded the app from the website a while ago.
I am now on the lates release from the app store. I will test again this afternoon but I'm sure it will work.

Thank you!

Till Mania

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Jun 2, 2026, 12:42:07 PM (yesterday) Jun 2
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Hi,
I can confirm, after installing the latest version from the app store, it works line a charm. 

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