> 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.

<div align="left"><figure><img src="/files/7bsPURJrFIv4VOTOj05P" alt=""><figcaption></figcaption></figure></div>

***

### 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.

<div align="left"><figure><img src="/files/BD4Zk9e4W4vG387nO7Uu" alt="" width="188"><figcaption></figcaption></figure></div>

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.

<div align="left"><figure><img src="/files/LDt4sBSBxHKIW1fVC7p3" alt="" width="188"><figcaption></figcaption></figure></div>

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.

<div align="left"><figure><img src="/files/nupIUPDHa1ljynFnFfai" alt="" width="375"><figcaption></figcaption></figure></div>

In the app at the top of the Record Session screen the connected ring will show its battery icon and charge level.&#x20;

This screen is also where additional rings can be added by tapping "Add Senstream Ring".

<div align="left"><figure><img src="/files/9wRVkPYZTTqH79kQvSoi" alt="" width="188"><figcaption></figcaption></figure></div>

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.

<div align="left"><figure><img src="/files/Z34RxS9AxbDX3you9S9B" alt="" width="186"><figcaption></figcaption></figure></div>


---

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