There are two ways to change your device name.
1. On the FollowMee app settings screen, or
2. On
your account page of the full web site (not available on mobile site). Click the "change" link next to your device name. Please note that the name change on the web site will not be synchronized with the device name on the app settings. And any further name change on the app settings will not overwrite the name change on the web site.