Secret Codes guide
#674# on iPhone: Check T-Mobile Message Usage
By Muhammad Shahid · · 3 min read
Quick answer
#674#: #MSG# — messages used this billing cycle. 674 spells MSG. T-Mobile replies with the number of messages used against your allowance for the current cycle. On plans with unlimited messaging the reply confirms the allowance rather than counting, which is expected behaviour.
| Code | #674# |
|---|---|
| What it does | #MSG# — messages used this billing cycle. |
| Published for | T-Mobile |
| Type | Carrier specific |
#MSG# — messages used this billing cycle. This page explains what #674# does, how to use it on an iPhone and which carriers it applies to.
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What does #674# do?
674 spells MSG. T-Mobile replies with the number of messages used against your allowance for the current cycle.
On plans with unlimited messaging the reply confirms the allowance rather than counting, which is expected behaviour.
It sits in the same family as #BAL# for balance, #MIN# for minutes and #WEB# for data, all of which answer with a free text.
How do I use #674#?
- Open the Phone app and tap Keypad.
- Type #674# 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 postpaid and prepaid lines. Short codes are delivered to the primary SIM only. |

Related more carrier and n11 codes
- +1-314-925-6925: AT&T Support From Overseas
- #793#: Reset T-Mobile Voicemail Password
- AT&T Prepaid Pay by Text
- #796#: Turn T-Mobile Voicemail Password On or Off
- *888*[number]#: Apply an AT&T Prepaid Refill PIN
- #766#: Turn On T-Mobile International Data Roaming
See all more carrier and n11 codes or every category of iPhone codes.
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Frequently asked questions
What does #674# do on iPhone?
#MSG# — messages used this billing cycle. 674 spells MSG. T-Mobile replies with the number of messages used against your allowance for the current cycle. On plans with unlimited messaging the reply confirms the allowance rather than counting, which is expected behaviour.
What else should I know about #674#?
It sits in the same family as #BAL# for balance, #MIN# for minutes and #WEB# for data, all of which answer with a free text.
What are the steps for #674#?
1. Open the Phone app and tap Keypad. 2. Type #674# exactly as written. 3. Press the green Call button and wait for the result.
Where do I use #674#?
On the keypad of the Phone app.
Do I need to press Call after typing #674#?
Yes. Type it on the Phone keypad, then press the green Call button.
Is #674# 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 #674# work on?
It is published for T-Mobile. T-Mobile postpaid and prepaid lines. Short codes are delivered to the primary SIM only.
Does #674# 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 #674# 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 #674# 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 #674#?
+1-314-925-6925: AT&T Support From Overseas. AT&T international customer care, free from an AT&T handset.
What else is in this category?
#793#: Reset T-Mobile Voicemail Password. #PWD# — reset a forgotten voicemail password.