AT&T WF721 User Manual

22

Frequently Asked Questions

Frequently Asked Questions

23

Problem

Possible Solution

Wireless 

Service 

indicator 

displays a red 

antenna and no 

bars are lit

•   Make sure the external antenna is 

installed and securely fastened.

•   Move your device to another area with 

sufficient network signal (at least 1 to 2 

green bars are displayed).

Solid red 

Wireless 

Service 

indicator 

(all other 

indicators  

solid green)

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.

Blinking red 

Wireless 

Service 

indicator

•   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. 

Problem

Possible Solution

SIM card 

doesn’t work 

in my mobile 

device

•   The SIM card provided with your Wireless 

Home Phone device is intended for use 

only in your specific Wireless Home 

Phone device and cannot be used in a 

mobile handset. 

Message 

Waiting 

indicator on my 

home phone 

equipment 

doesn’t light
 

•   The Wireless Home Phone device does 

not support this functionality with your 

home phone equipment.

•   The Wireless Home Phone device has 

a dedicated Message Waiting indicator 

light and will flash when you have a new 

voice message. You will also hear an 

intermittent dial tone when you pick up 

your handset.

I hear an 

intermittent  

dial tone

•   You will hear an intermittent dial 

tone when you have a new voicemail 

message waiting.

•   Dial 1 from your home phone equipment 

connected to the Wireless Home Phone 

device to review your voice messages.