To install the Smart Kid Scale, perform the following steps:

1. Pull the tab below the scale if it's the first time you're installing it.
2. Open the Baby Companion app.
3. Open the menu and tap Settings.
   
4. Tap Withings Kid Scale.
   
5. Tap Install a new scale.
   
6. Press the scale button for 4 seconds and tap Next.
   
7. Go to the Bluetooth settings of your mobile device and pair your Smart Kid Scale to your device. 
   Note: If you have previously installed your scale with this mobile device, it will appear in the list of Bluetooth devices. To the right of the scale, you will see a blue 'i' icon. Select this icon, select 'Forget this device,’ and then confirm.
   
8. Go back to the app.
9. Tap Install now.
   
10. Tap Set up a Wi-Fi connection to install it in Wi-Fi or I don't have a Wi-Fi network to install it in Bluetooth.
    
11. For Wi-Fi installation, tap the Wi-Fi you want to use and then tap Allow.
12. Tap OK.