# *#5005*7672# on iPhone: Check Your SMS Centre Number URL: https://byshahid.com/blog/check-your-sms-centre-number-star-hash-5005-star-7672-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > *#5005*7672#: Read back the message centre your texts route through. The SMS Centre is the carrier server that relays your outgoing text messages. This string reads the number stored on your SIM or eSIM. It is occasionally useful when texts stop sending on one line but calls still work — a blank or wrong SMSC is one of the causes. - **Code:** *#5005*7672# - **What it does:** Read back the message centre your texts route through. - **Published for:** AT&T and T-Mobile - **Type:** Support varies Read back the message centre your texts route through. This page explains what `*#5005*7672#` 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](https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322). ## What does *#5005*7672# do? The SMS Centre is the carrier server that relays your outgoing text messages. This string reads the number stored on your SIM or eSIM. It is occasionally useful when texts stop sending on one line but calls still work — a blank or wrong SMSC is one of the causes. ## How do I use *#5005*7672#? - Open the Phone app and tap Keypad. - Type *#5005*7672# exactly as written. - Press the green Call button and wait for the result. ## Which carriers does this apply to? | Published for | AT&T and T-Mobile | | Type | Support varies | | Good to know | A SIM service string. It answers on some US lines and returns an error on many others, particularly on Verizon and UScellular. An error does not mean anything is wrong. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related network and signal - [*3001#12345#*: Field Test Mode](/blog/iphone-field-test-mode/) - [*#43#: Check Call Waiting](/blog/check-call-waiting-star-hash-43-iphone/) - [*43#: Turn On Call Waiting](/blog/turn-on-call-waiting-star-43-iphone/) - [#43#: Turn Off Call Waiting](/blog/turn-off-call-waiting-hash-43-iphone/) - [*#33#: Check Call Barring](/blog/check-call-barring-star-hash-33-iphone/) - [Choose Your Network Manually](/blog/choose-your-network-manually-iphone/) See all [network and signal](/blog/iphone-codes/network/) or [every category of iPhone codes](/blog/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. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What does *#5005*7672# do on iPhone? Read back the message centre your texts route through. The SMS Centre is the carrier server that relays your outgoing text messages. This string reads the number stored on your SIM or eSIM. ### What else should I know about *#5005*7672#? It is occasionally useful when texts stop sending on one line but calls still work — a blank or wrong SMSC is one of the causes. ### What are the steps for *#5005*7672#? 1. Open the Phone app and tap Keypad. 2. Type *#5005*7672# exactly as written. 3. Press the green Call button and wait for the result. ### Where do I use *#5005*7672#? On the keypad of the Phone app. ### Do I need to press Call after typing *#5005*7672#? Yes. Type it on the Phone keypad, then press the green Call button. ### Is *#5005*7672# 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 *#5005*7672# work on? It is published for AT&T and T-Mobile. A SIM service string. It answers on some US lines and returns an error on many others, particularly on Verizon and UScellular. An error does not mean anything is wrong. ### Does *#5005*7672# 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 *#5005*7672# 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 *#5005*7672# 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 *#5005*7672#? *3001#12345#*: Field Test Mode. Open the hidden cellular engineering screen. ### What else is in this category? *#43#: Check Call Waiting. See whether a second incoming call will interrupt you. ## Sources - [3GPP TS 22.030: Man-Machine Interface of the phone](https://www.3gpp.org/dynareport/22030.htm) - [Apple Support: iPhone User Guide](https://support.apple.com/guide/iphone/welcome/ios)