User guide

How many devices can I connect to my AT&T Home Base?
There are two phone ports to connect your phone or answering machine. For
data, you can connect up to 10 devices via Wi-Fi simultaneously and one device
via Ethernet.
How can I check my data speed?
You can check your data speed by visiting att.com/speedtest.
Will connecting additional devices affect my data speed?
Yes, active use of multiple devices will decrease your data speeds.
Can I change my Wi-Fi network name and password?
Yes, you can change your Wi-Fi network name and password using the AT&T Home
Base Manager. From any connected device, enter http://att.homebase directly
into your browser address field and log in using “attadmin” (or your customized
login). Go to Settings > Wi-Fi > Basic to change your network name and Settings >
Wi-Fi > Security to change your password.
How do I know how much data I’ve used?
To check your data plan usage for your current billing cycle, go to att.com/myatt.
You can also view your data usage and the days remaining in your billing cycle
using the AT&T Home Base Manager. From any connected device, enter http://att.
homebase directly into your browser address field and log in using “attadmin” (or
your customized login), and go to Data Used.
Once I’ve reached the maximum amount of data in my plan, can I continue to
use my AT&T Home Base for data?
Yes, but overage charges will apply. To upgrade your data plan, visit att.com/myatt.
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Frequently Asked Questions
Troubleshooting
General
Problem Possible Solution
None of the LEDs
are illuminated
• Make sure there is AC power to the AT&T Home Base.
Do not connect to an AC outlet controlled by a wall
switch.
• Press and hold the On/Off button on the back of the
AT&T Home Base for three (3) seconds until the Power
light stays steady green.
Red signal strength
indicator
• Move your device to another area of the home with a
strong wireless signal.
Flashing Red signal
strength indicator
• SIM is missing or not installed properly.
1) Remove the bottom of the device and back-up
battery.
2) Locate the SIM card slot and insert the SIM card
into the slot until secure. The SIM card will click
and lock in place when properly installed in the
correct orientation.
• SIM card may be invalid or damaged and need to
be replaced.
SIM Card doesn’t
work in my mobile
device
• The SIM card provided with your AT&T Home Base is
intended for use only in your specific AT&T Home Base
and cannot be used in a mobile handset.
Troubleshooting 27