Dialing #662# on a T-Mobile phone turns on Scam Block, which filters incoming calls flagged as “Scam Likely.”
When people ask what happens if you dial 662 on a mobile phone, they are almost always talking about the code #662# used on T-Mobile and related networks in the United States.
This short code switches on a network feature called Scam Block, which tries to stop calls that your carrier already marks as “Scam Likely” from ringing your phone at all.
There is a second twist. The digits 662 are also a standard area code in northern Mississippi.
So if you just dial 662 followed by more numbers like a normal phone call, your phone will attempt a regular call, not a spam-blocking feature.
The special behavior only kicks in when you dial #662# exactly on a compatible carrier.
What Happens When You Dial 662 On T-Mobile
On T-Mobile and Metro by T-Mobile, dialing #662# tells the network to switch on Scam Block for your line.
Scam Block works at the network level, before calls reach your phone.
When a call comes in from a number that T-Mobile’s systems already treat as a high-risk source, the call is blocked or sent to voicemail instead of ringing through.
According to T-Mobile’s own Scam Shield and call blocking pages, customers can turn on Scam Block in several ways, and one of those is simply dialing #662# from a T-Mobile device, which sets the preference for that line on the network side
(alongside options in the Scam Shield app and the T-Mobile account dashboard).
The same behavior is available for Metro by T-Mobile lines that support Scam Shield features.
After you dial #662#, you usually hear an audio message or see a short confirmation on screen telling you that Scam Block has been enabled.
Once that setting is active, calls that T-Mobile identifies as scam traffic will not appear as standard incoming calls.
You might see them in your call history or in the Scam Shield app as blocked entries, but your phone will stay silent for those calls.
Scam Block Basics: How The 662 Code Works
Scam Block uses the carrier’s own databases and analytics to decide which calls look risky.
T-Mobile has published reports describing how its network analyzes huge volumes of call traffic and patterns to tag calls as “Scam Likely,” and Scam Block builds directly on that tagging.
When Scam Block is off, those callers still reach you, but you see “Scam Likely” on the caller ID.
When Scam Block is on through #662#, those same calls are stopped before they ring.
The logic lives on the network, not just in an app on your phone.
That means Scam Block can help even if you switch phones, reset your device, or use a basic handset as long as the line and device are compatible with the feature.
The setting is tied to your phone number on T-Mobile’s side.
What Types Of Calls 662 Can Block
Scam Block is tuned for high-risk calls.
That usually means robocalls or scam campaigns that T-Mobile’s systems have already linked to fraud or aggressive spam.
- Known scam campaigns — numbers and ranges that show patterns of fraud reports or mass spam activity.
- Robocall blasts — automated dialing patterns that match known scam operations.
- Calls flagged as “Scam Likely” — any caller that the network already labels with that tag in caller ID.
Legitimate businesses that obey calling rules and do not match those patterns should still ring through, even when Scam Block is turned on with #662#.
That said, no filter is perfect, so there is always a chance that a real caller could be blocked if their number behavior looks similar to scam traffic.
What 662 Cannot Do
Scam Block helps a lot, but it does not give complete protection.
- It does not stop every spam call — new scam numbers and freshly spoofed caller IDs can slip through before the network learns them.
- It does not block text spam — #662# focuses on voice calls. Text filtering uses different systems and reporting tools.
- It does not replace basic caution — even when scam calls slow down, you still need to treat unexpected offers and urgent demands on the phone with care.
For broader guidance on stopping unwanted calls across carriers, the
FCC guide on unwanted robocalls and texts
gives practical steps on blocking, reporting, and registry tools.
Step-By-Step: How To Use 662 To Turn Scam Block On Or Off
The exact steps can vary slightly between T-Mobile, Metro by T-Mobile, and plan type, but the core flow is simple.
You use the phone dialer just like you would for a normal call, except you dial a short code instead of a full phone number.
Turning Scam Block On With #662#
Here is the basic process most T-Mobile and Metro lines follow when you want to turn Scam Block on with the 662 short code.
- Open the Phone app — tap the Phone icon on your home screen or app drawer.
- Go to the keypad — switch to the pad where you can dial numbers manually.
- Enter #662# exactly — type the pound sign, then 6-6-2, then another pound sign.
- Press the Call button — place the call as if you were dialing a normal phone number.
- Listen for confirmation — wait for the brief recording or on-screen message that Scam Block is active for your line.
On many lines this change happens within seconds.
You do not need to restart the phone.
Once the carrier confirms the change, Scam Block begins to filter scam-tagged calls.
Turning Scam Block Off With #632#
Some people try Scam Block and later decide they want every call to ring through, even if it carries a “Scam Likely” tag.
T-Mobile and Metro give a matching code, #632#, to turn Scam Block off on many plans.
- Open the Phone app — again, start from your normal dialer screen.
- Enter #632# — type pound, 6-3-2, pound on the keypad.
- Place the call — press the Call button and wait a moment.
- Confirm the status — listen for the message that Scam Block has been turned off for your line.
After that, calls tagged as “Scam Likely” will ring like any other call again, though they should still show the scam label on the screen.
Checking Status In Scam Shield Or Account Tools
T-Mobile also exposes Scam Block status in its apps and account pages.
You can open the Scam Shield app or log in to your T-Mobile account to double-check whether Scam Block is on.
T-Mobile’s own
block unwanted calls help page
lists #662# as one of several ways to manage Scam Block.
Codes Linked To 662 And Spam Blocking
Several short codes sit next to #662# in the same family of call-blocking tools.
The table below gives a quick snapshot of the main ones many T-Mobile users see in guides and tips.
| Code | Typical Action | Notes |
|---|---|---|
| #662# | Turn Scam Block on | T-Mobile and Metro lines that support Scam Shield. |
| #632# | Turn Scam Block off | Restores normal ringing for “Scam Likely” calls. |
| 7726 (text) | Report spam texts | Many carriers accept spam reports when you forward texts to 7726. |
| 611 | Carrier customer service | On T-Mobile, you can ask a representative to adjust Scam Block settings. |
Codes can change over time, and some apply only in certain regions or on certain plans.
If you ever see an error tone after dialing #662#, that usually means the short code is not active for your line or carrier.
Pros And Limits Of Blocking Calls With 662
Dialing #662# is simple, and for many T-Mobile customers it noticeably cuts down on unwanted calls.
Still, it helps to be clear on what you gain and where the edges of the feature sit so you can set realistic expectations.
Why Many People Like Using 662
- Fast setup — one short call turns Scam Block on without digging through several settings menus.
- Network-level filtering — spam calls are stopped before they ring, instead of only being muted on the device.
- Works across devices on the line — if you change phones but keep the same number on T-Mobile, Scam Block follows the number.
- Free for eligible lines — Scam Block in its basic form is offered at no extra charge on many T-Mobile plans.
Limits You Should Know About
- Possible false positives — a real business call can be blocked if its number behavior looks too close to known scams.
- No control over every detail — the scoring of calls happens on the carrier side, so you cannot tweak every rule for yourself.
- New scam numbers still appear — scammers frequently rotate numbers, so some unwanted calls will still ring until the databases update.
- Voice only — text spam and messaging scams travel on different channels and need their own filters and reporting tools.
When Scam Block is active with #662#, treat it as one strong layer in a wider set of tools rather than the only fix you rely on.
What Happens If 662 Does Nothing On Your Phone
Not every carrier understands #662#.
Many guides and social posts talk about “dialing 662 to block scams,” which can be confusing if you use another network like Verizon or AT&T.
On those networks the call might fail, or it might be treated as a plain attempt to reach a phone number that starts with 662.
If you dial #662# and only hear an error tone, or the phone simply hangs up without a clear message, your carrier probably does not offer that short code.
In that case, you should look for the carrier’s own spam-blocking tools, which usually live in a branded app or account dashboard instead of behind the 662 code.
Carrier Tools Outside T-Mobile
Other major networks offer their own spam-blocking services:
- Verizon Call Filter — a feature that labels and filters suspected spam calls, with free and paid tiers.
- AT&T ActiveArmor — a suite of call and data protections, including spam call labeling and blocking.
- Third-party apps — tools such as Hiya, RoboKiller, and others can add their own layer of call filtering on top of what your carrier provides.
If #662# fails on your line, using the carrier’s main spam-blocking app or settings page usually gives a similar result, just through a different path.
Calling 662 As An Area Code
If you dial 662 without the pound signs and then add seven more digits, your phone treats it as a standard call to the 662 area code rather than a special code.
That area code covers parts of northern Mississippi in the United States.
Nothing about that call turns Scam Block on or off; it is just a normal outgoing call.
Extra Ways To Cut Down Scam Calls
Even with #662# active on T-Mobile, it is smart to use a few more habits and tools to keep spam calls under control.
These work across most smartphones and carriers and pair well with Scam Block.
Use Phone Settings To Silence Unknown Callers
- Turn on “Silence Unknown Callers” on iPhone — this setting sends calls from numbers outside your contacts and recent calls straight to voicemail.
- Use call blocking options on Android — many Android phones include a setting to block callers without a number or calls from sources marked as spam.
These settings do not change Scam Block itself, but they help mop up calls that slip past carrier-level filters.
Register And Report When Needed
- Add your number to the Do Not Call list — in the United States you can place your number on the National Do Not Call Registry so lawful telemarketers avoid it.
- Report persistent scam calls — if you keep getting shady calls, you can submit reports through the
FTC’s unwanted calls advice page
and related complaint forms linked there.
Honest callers tend to respect these steps, while scam operations may still ignore them.
That is why pairing registry and reporting tools with carrier-level features like #662# gives the best overall result.
Be Careful With Where Your Number Appears
- Limit entries on public websites — posting your number openly on listings or social pages makes it easier for lead lists to scoop it up.
- Watch opt-in checkboxes — online forms often include small boxes that grant permission for marketing calls or texts; uncheck them when you do not want outreach.
- Use secondary numbers when possible — consider a second line or number for contests, sign-ups, and discount clubs so your main line stays quieter.
Over time, these habits reduce the number of sources that can legitimately call you, which makes any remaining scam traffic stand out more.
Quick Recap On 662 And Scam Calls
When you hear advice about dialing 662 to stop spam calls, the real instruction is to dial #662# on a T-Mobile or Metro by T-Mobile line.
That code turns on Scam Block, which relies on the carrier’s network data to stop calls tagged as “Scam Likely” from ringing your phone.
If you are on another carrier, or if you dial 662 without the pound signs, nothing about Scam Block changes.
The call either fails as an unrecognized short code or goes through like any other call to the 662 area code.
For T-Mobile customers, using #662# alongside the Scam Shield app, device-level call blocking, and the robocall guidance from bodies like the FCC and FTC gives a strong mix of tools.
The end goal is simple: more real calls from people you know and fewer interruptions from “Scam Likely” callers that never should reach you in the first place.