How do I get the Device Manager to manage multiple devices? I have two Android phones and two Android tablets. I currently have the phones and tablets on separate Google accounts but I might consolidate them into one Google account. Currently my old phone, a Motorola Droid X, is in the Android Device Manager. I am trying to add my new phone, a Galaxy S5. They use the same Google account. Both devices appear in the Google Play Store settings. I have tried to follow the instructions in Turn Android Device Manager on or off - Accounts Help for the S5 but when I go to Android Device Manager, either from my PC or from the S5, all I get is the Droid X. How do I get the Device Manager to also manage the S5? If that is not possible, then has Google officially stated that each device must have a different Google account?