How to Forward Calls on AT&T
On AT&T wireless, dial *21*, the 10-digit number, and # to forward every call, and #21# to turn it off. To forward only the calls you miss, use the standard conditional codes below. They go through AT&T's network, so they work on iPhone and Android.
Updated September 30, 2026
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Recommended
Forward only calls you miss, decline, or can't take
**004*[10-digit number]#
Covers unanswered calls, calls while you're on the phone, and calls while your phone is off or out of signal.
Forward every call
Forward every call immediately
*21*[10-digit number]#
Your phone won't ring while this is on.
Turn off forward-all
#21#
Forward only some calls (conditional)
Unanswered, busy, and unreachable calls (all three)
**004*[10-digit number]#
Unanswered calls only
**61*[10-digit number]#
Calls while you're on another call (busy)
**67*[10-digit number]#
Calls while your phone is off or out of signal
**62*[10-digit number]#
Turn off conditional forwarding
##004#
Step by Step
- 1
Open the Phone app on your AT&T phone.
- 2
Dial **004* followed by the 10-digit number you want calls sent to, then #. For example: **004*5551234567#
- 3
Tap Call and wait at least three seconds for the confirmation before hanging up.
- 4
Test it: call your number from a different phone and let it ring out, or decline the call. It should reach your forwarding number.
Good to Know
- AT&T only lets you change call forwarding from the phone itself. You can't manage it online.
- Call forwarding overrides your AT&T voicemail, so unanswered calls go to the forwarding number instead.
- AT&T bills forwarded calls for the length of the call, which usually doesn't matter on an unlimited plan.
- On iPhone you can also turn on forward-all in Settings: Apps › Phone › Call Forwarding. The conditional codes have to be dialed.
Forward Missed Calls to an AI Receptionist
Ringzy gives you a local number with an AI receptionist on the other end. Forward the calls you miss to it and every caller talks to someone, 24/7, instead of reaching voicemail. Plans start at $39/month with a 7-day free trial.
Keep your number
Customers keep calling the number on your truck, website, and Google profile.
Your phone rings first
With missed-call forwarding, you answer when you can. Ringzy picks up the calls you can't.
Every caller gets an answer
The AI answers questions, books appointments, and emails you a transcript and summary.
Using live call transfers? Set Ringzy's transfer number to a different phone than the one you forwarded. Otherwise an unanswered transfer can be forwarded straight back to Ringzy.
AT&T Call Forwarding FAQ
Dial *21*, then the 10-digit number, then # (for example *21*5551234567#) to forward every call. Dial #21# to turn it off. Wait for the confirmation tone before hanging up.
Dial **61*, the 10-digit number, and # to forward unanswered calls, or **004*, the number, and # to also cover calls that come in while you're busy or your phone is off. Dial ##004# to turn conditional forwarding off.
No. AT&T only allows call forwarding changes from the wireless phone itself, for security.
Yes. While forwarding is on, calls go to the forwarding number instead of your AT&T voicemail.
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