How do I add a device onto my devices in iCloud?
I cannot see two of my devices on my list on iCloud. How do I add them??
See this article https://support.apple.com/en-in/HT205064
Add a device to the list
To add a device to the list, you need to sign in with your Apple ID. After you sign in on a device with your Apple ID, that device appears in the list. Here's where you need to sign in:
- For iOS 9 and later, sign in to iCloud, iMessage, FaceTime, the iTunes and App Store, or Game Center on the device. You can also see your paired Apple Watch.
- For iOS 8, sign in to iCloud or the iTunes and App Store on the device. You can also see your paired Apple Watch.
- For OS X Yosemite and later or Windows 10 and later, sign in to iCloud on the device.Â
- For tvOS 7 and later, sign in to the iTunes and App Store on the device.
- If any of your devices are using earlier versions of iOS, OS X, or tvOS, you won’t see them in your device list.
Read this also https://support.apple.com/kb/ph21251?locale=en_US
- To see more information about a device, select it in the list.
You can’t see a device’s complete serial number on iCloud.com, but there are other ways you can find it:
- On your iOS device (iOS 10.3 or later): Go to Settings > [your name], then select a device.
- On your iOS device (iOS 10.2 or earlier): Go to Settings > iCloud > Apple ID > Details, then select a device.
- On your Mac: Choose Apple menuÂ
 > System Preferences, click iCloud, click Account Details, click Devices, then select a device.
