Secret Codes guide
#634# on iPhone: Turn Off T-Mobile Scam ID
By Muhammad Shahid · · 3 min read
Quick answer
#634#: Stop labelling calls as Scam Likely. #634# switches Scam ID off, so calls arrive with no network-applied scam label at all. Worth knowing if a number you actually need keeps getting flagged. Before turning the whole feature off, check whether Scam Block is also on, because Scam Block is what rejects calls, and #632# turns that off separately.
| Code | #634# |
|---|---|
| What it does | Stop labelling calls as Scam Likely. |
| Published for | T-Mobile |
| Type | Carrier specific |
Stop labelling calls as Scam Likely. This page explains what #634# does, how to use it on an iPhone and which carriers it applies to.
I build Secret Codes: IMEI & Carrier, a free iPhone app with 317 checked codes and guides, including this one. If you would rather tap than memorise, get Secret Codes on the App Store.
What does #634# do?
#634# switches Scam ID off, so calls arrive with no network-applied scam label at all.
Worth knowing if a number you actually need keeps getting flagged. Before turning the whole feature off, check whether Scam Block is also on, because Scam Block is what rejects calls, and #632# turns that off separately.
You can confirm what is currently active with #787# (#STS#), the Scam Shield status code.
Important: With Scam ID off you lose the warning label on suspected fraud calls. Turning it back on is a single call to #664#.
How do I use #634#?
- Open the Phone app and tap Keypad.
- Type #634# exactly as written.
- Press the green Call button and wait for the result.
Which carriers does this apply to?
| Published for | T-Mobile |
|---|---|
| Type | Carrier specific |
| Good to know | T-Mobile consumer lines. |

Related more carrier and n11 codes
- #664#: Turn On T-Mobile Scam ID
- #436#: T-Mobile Inbound Caller ID Name
- #999#: T-Mobile Prepaid Account Balance
- +1-505-998-3793: T-Mobile Support From Overseas
- #2535#: T-Mobile Bill Ready Notification
- 888-944-9400: UScellular Customer Service
See all more carrier and n11 codes or every category of iPhone codes.
How Secret Codes helps
Secret Codes keeps this and every other entry a search away. Pick your carrier once and each entry says whether it is published for your line. You can save favourites, add a private note, and record whether a code worked on your line. This entry is part of Secret Codes Pro.
Frequently asked questions
What does #634# do on iPhone?
Stop labelling calls as Scam Likely. #634# switches Scam ID off, so calls arrive with no network-applied scam label at all. Worth knowing if a number you actually need keeps getting flagged.
What else should I know about #634#?
Before turning the whole feature off, check whether Scam Block is also on, because Scam Block is what rejects calls, and #632# turns that off separately. You can confirm what is currently active with #787# (#STS#), the Scam Shield status code.
What are the steps for #634#?
1. Open the Phone app and tap Keypad. 2. Type #634# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use #634#?
On the keypad of the Phone app.
Do I need to press Call after typing #634#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is #634# a hidden or secret code?
No. It is a published service, not a hidden menu. iPhones do not have Android-style engineering menus.
Which carriers does #634# work on?
It is published for T-Mobile. T-Mobile consumer lines.
Is there anything to watch out for with #634#?
With Scam ID off you lose the warning label on suspected fraud calls. Turning it back on is a single call to #664#.
Does #634# work on Android phones too?
It is handled by the carrier or service rather than the iPhone, so it is not tied to one phone brand. Check with your carrier.
Will #634# work outside the US?
It is published for US carriers and services, so do not count on it abroad. Ask your carrier before you travel.
What if #634# does not work on my iPhone?
Check that it applies to your carrier first, because carriers decide which services they offer and can change them. If it should apply to your line, contact your carrier.
What is related to #634#?
#664#: Turn On T-Mobile Scam ID. #ONI# — label suspected scam calls without blocking them.