AT&T Maestro 3 User Manual page 212

Problem: The phone will not make calls, send messages, check email, or
connect to the Internet .
• Solution 1: The network signal may be too weak or you may be out of the
service area . Return to an area with a strong network signal .
• Solution 2: Restart the device . Press and hold the Power key, then tap Restart .
• Solution 3: Make sure Airplane mode is not active . From the Home screen,
swipe up to access Apps and tap Settings
Airplane mode and ensure the switch is in the Off
• Solution 4: Make sure mobile data is enabled . From the Home screen,
swipe up to access Apps and tap Settings
> Mobile network and ensure the switch is in the On
Problem: The battery drains too quickly .
Solution: Making calls or connecting to a mobile network outside of your
service area will drain the battery . Certain apps and functions can also drain
the battery .
Tip: You can enable the Battery Manager to help identify which apps are
draining the battery . From the Home screen, swipe up to access Apps and
tap Settings
On
position .
> Battery > Battery Manager and slide the switch to the
> Network & internet
position .
> Network & internet
position .
>
212