> For the complete documentation index, see [llms.txt](https://docs.senstream.com/senstream-researcher-ring-application-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.senstream.com/senstream-researcher-ring-application-user-guide/ios-mobile-app/pairing-a-ring.md). # Pairing a Ring ### Ring in pairing mode To pair a ring to the iOS device, ensure that the ring is fully charged. By removing the ring from a charger the LED will flash blue indicating that it is available to be discovered by the iOS app through a bluetooth connection.

*** ### First time in app The first time running the application, after the user chooses where the data will be stored, the app will prompt the user to scan for rings.

Select “Start Scanning” and approve the use of bluetooth. #### Select available ring A ring flashing blue in pairing mode will show in the menu of available rings.

Selecting the ring will pair the ring with the app. The LED on the ring will turn solid green indicating that it is successfully paired.

In the app at the top of the Record Session screen the connected ring will show its battery icon and charge level. This screen is also where additional rings can be added by tapping "Add Senstream Ring".

The system is now ready to record a session! *** ### Remove Ring from App If you want to remove a ring and add a new one, swipe the ring label to the left and the red REMOVE button will appear. Tap the button to remove, then add a new ring that is advertising.