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Syncing data between Vantage M/Vantage V 
and Polar Flow app fails 

If your Polar Vantage M or Vantage V fails to sync with the Polar Flow app, please go through 
the following checklist first: 

iOS:

 

 

Make sure the app and watch are both up to date: Check from the 

App store

 that you’ve 

got the latest version of the app installed. Flow app or FlowSync will tell you if there’s a 
firmware update available for your watch. 

 

Make sure that Bluetooth is turned on in your phone settings. 

 

Make sure Flow app is running on your phone and keep it at the foreground. 

Android:

 

 

Make sure the app and watch are both up to date: Check from 

Google Play

 that you’ve 

got the latest version of the app installed. Flow app or FlowSync will tell you if there’s a 
firmware update available for your watch. 

 

Make sure that Bluetooth is turned on in your phone settings. 

 

Make sure location is enabled for Polar Flow app in the phone's application settings. On 
Android 6 and newer devices, location permission is needed to scan for Bluetooth 
devices. 

 

Make sure Flow app is running on your phone and keep it at the foreground. 

 

If you have several Flow app compatible Polar devices in use, make sure you have 
chosen Vantage M/Vantage V as the active device in the Flow app. This way Flow app 
knows to connect to your watch. In the Flow app, go to 

Devices

 and choose Vantage 

M/Vantage V, and then return to the main menu. 

  

If you have completed all of the above steps but you are still having problems with the sync, 
please choose an option below (iOs or Android) to continue troubleshooting:

 

Troubleshooting sync with the Flow app for iOS

 

Try the following steps one at a time

 to fix the syncing problem. Try to sync again after each 

step. Continue with the steps if the sync fails. 

1.

 

Switch Bluetooth off and on from your phone. 

2.

 

Restart your phone and your watch. To restart your watch, go to 

Settings

 > 

General 

settings

 > 

About your watch

 

> Restart your watch

. Press the OK button and then press 

OK again to confirm the restart. You can also restart your watch by pressing and holding 
the OK button for 10 seconds. 

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