This article describes how to reset the device to its factory settings.
INSTRUCTIONS & INFO
To reset the AT&T Modio LTE case to default settings, push in the device Reset button for 2 seconds then release. Note: This will reset the Wi-Fi network name (SSID) and password.
To reset the AT&T Modio Data app to default settings, tap Settings.
Scroll to and tap AT&T Modio Data.
Slide the Reset switch to the On position.
Press the Home Key.
When you access the AT&T Modio Data app the 'Welcome to AT&T Modio Data' wizard will display.