Manage your AT&T Cell Booster and Cell Booster Pro with the AT&T Cell Booster App. Set up, manage, and troubleshoot all in one place. Sign in with your myAT&T, Premier or FirstNet User ID and password to get started! • Register your AT&T Cell Booster or AT&T Cell Booster Pro • Follow instructions to set up your device • Manage your user and notification settings • Get real-time status and troubleshooting tips • For Cell Booster Pro view performance reports The AT&T Cell Booster app is available to AT&T Mobility customers who have the AT&T Cell Booster or AT&T Cell Booster Pro device.