AT&T WF721 User Manual page 27

Problem
Wireless
Service
indicator
displays a red
antenna and no
bars are lit
Solid red
Wireless
Service
indicator (all
other indicators
solid green)
Blinking red
Wireless
Service
indicator
22
Possible solution
• Make sure the external antenna is
installed and securely fastened.
• Move your device to another area with
suffi cient network signal (at least 1 to
2 green bars are displayed).
A software update is in progress and may
take up to 7 minutes to complete. Once
complete, the LEDs on your Wireless
Home Phone device will return to
normal state.
• SIM is missing or not installed properly.
1) Remove the battery cover and battery.
2) Locate the SIM card slot and insert the
SIM card into the slot until secure.
• SIM card may be invalid or damaged and
needs to be replaced. For a replacement
SIM card, take your Wireless Home Phone
device to your local AT&T store. Or, call
AT&T Customer Care at 800.901.9878.
Frequently asked questions