How do I suspend an AT&T wireless line or block a lost phone?
Answer
For AT&T wireless, use the official account tools to suspend service or block a device as soon as the phone is lost or stolen. Sign in at att.com or the myAT&T app, choose the affected line, then use Suspend wireless service or Block device. Do this before relying on location features that may stop working after the line is suspended.
Before you start: stop right away if…
- Do not share AT&T passwords, account PINs, or one-time codes with anyone who contacts you unexpectedly about a lost phone.
Follow these steps
Sign in to the AT&T account
Open the myAT&T app or go to att.com on a trusted device and sign in as the account owner or authorized user.
You should see: You can see the wireless lines on the account.
Select the affected number
Choose the phone number that belongs to the lost or stolen device before changing any other line.
You should see: The account shows management options for that specific line.
Suspend service or block the device
Use Suspend wireless service to pause the line, or Block device if AT&T offers that option for the handset. Confirm the change and save any confirmation number.
You should see: AT&T shows the line as suspended or the device as blocked.
Plan the next recovery step
After the line is secured, decide whether to use Find My Device or carrier location tools while still available, request a replacement SIM or phone, or permanently cancel the line.
You should see: The number is protected and you have a clear plan to restore service on a replacement device.
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Extra tips
What to look for: In AT&T account settings, options labeled Suspend wireless service or Block a device for the specific phone number.
Before you change anything: Have the AT&T account PIN or owner sign-in ready. Write down the phone number and IMEI if available. Understand that suspending a line can disable location or GPS features that depend on an active connection. Never share account passwords or one-time codes with unexpected callers.