AT&T Maestro 3 - Battery, Sound, and Display Settings

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Battery
Monitor your phone’s battery usage through the Battery settings menu.
Check the battery consumption and percentage.
1. From the Home screen, swipe up to access Apps and tap Settings .
2. Tap Battery .
Battery usage
View battery usage from last full charge.
1. From the Home screen, swipe up to access Apps and tap Settings .
2. Tap Battery > Battery usage.
3. You can view the battery percentage that each apps used.