The dial screen on your iPhone has much more to offer than just entering phone numbers and pressing the green call button. It's not very obvious, but there are actually secret codes that you can enter into the dialer to get information about your device, troubleshoot problems, and mask outgoing calls, to name but a few.
These hidden dialer codes also called short codes, star codes, pound codes, etc., have been around for a while. In fact, they are a combination of different technologies and protocols, such as unstructured supplementary service data (USSD), manufacturer-defined MMI (man-machine interface) and supplementary service codes (SS codes). Either they are coded by the carrier or by the manufacturer.
Some codes do not work anymore, new ones have appeared, others only work on certain iPhone models (GSM vs. CDMA) or certain carriers. There are some websites and chain emails that list good codes, such as: For example, choosing * 3370 # to unlock hidden battery power so that you can not trust everything (this code actually reduces the power of some Nokia phones) (1
Tips for Reading These Codes
When You See XXXXXXXXXX In one of the following codes, there is the seven-digit phone number with the prefix of ten digits you are calling. For some of these codes, it may take effect immediately after the last digit or symbol is entered. If not, you need to press the green "call" button.
Use the code * 3001 # 12345 # *, and then press the call key. This shows you the Field Test tool that contains data on your SIM card, cellular connections and more.
* 3001 # 12345 # *
Much of it is useless to us, but it's still fun to watch. You can, however, get a better idea of what your reception looks like by looking at the dBm (decibel milliwatt) values. In iOS 10 and earlier versions, using this code would show the dBm instead of signal receive bars, but you'll have to delve a bit deeper into iOS 11 and higher to see those numbers – and this only works on iPhones with Intel Wireless Radio. Chips
If you have one of the supported iPhone models in iOS 11 and later, in the Field Review mode, tap "LTE" and then "Serving Cell Meas." On the next screen, look at the number rsrp0 you want to use for your reception in dBm. For more information on what this means, read our full guide to the following topic:
2. Check Your IMEI Number
If you enter * # 06 #, you will immediately see your iPhone's IMEI number . This trick does not seem to work on Verizon Wireless, but on all other tested carriers.
* # 06 #
This is much faster than under Settings -> General -> About, Hunting for the box you threw away anyway, or take your case and open the SIM card slot.
3. Make anonymous calls
If you want to call anonymously so that your name and / or phone number does not appear on your recipient's phone screen or caller ID, thank the FCC. They have mandated that all US carriers give their customers the ability to block their information on the Caller ID screens.
All carriers: * 67XXXXXXXXXX T-Mobile (alternative): # 31 # XXXXXXXXXX
To do it, just type * 67 before dialing the number you call, which works with most network operators. All they'll see at the end of the call is "unknown," "private," or some other indicator of the like. They are less likely to choose an unknown number because they get a bad name when they are associated with spammers, but you never know. T-Mobile also has another code available.
. 4 Display Your Caller ID Number
If you call all outgoing calls anonymously from your mobile service provider using the setting and you do not call the same tip as with any call, you can remove anonymity on a call. on call with the code * 82 before you dial the number to call
All network operators: * 82XXXXXXXXXX T-Mobile (alternative): * 31 # XXXXXXXXXX
This is necessary to make calls to those who block unknown callers, as well as if you want someone to know you called, and most network operators is working. T-Mobile has another alternative code available.
5. Call Transfer
Each mobile operator has its own directory assistance service with a live operator, and the dialer code for accessing these numbers is 411 followed by the call key. If you need help finding a phone number, address, or basic information for a business, this is a great option if you do not want other apps on your smartphone to be digging for something. You can even access movie programs, get directions, and more.
Most carriers allow up to three requests per call, but AT & T only allows two. Directory entries can be sent to you via SMS, so you will not forget information. But all that is not free – you will be charged $ 1.99 for every 411 call, so use wisely. We suggest using Maps, Yelp, Safari or other apps to give you what you need instead of spending hard-earned dollars on it.
For more information about 411 and the costs and services for each provider, visit the support pages for AT & T, Sprint, T-Mobile or Verizon Wireless.
. 6 Call Customer Service
Another handy three-digit number is 611. Unlike 411, this number is free and connects you to wireless customer service. For some carriers, it will be an automatic phone system that can connect you to the wireless customer service. Not all of them are 24/7 numbers, so visit AT & T, Sprint, T-Mobile, and Verizon for hours to talk to a real person about account matters and more.
611 (* 611 also works on Verizon Wireless)
7. Get Local Traffic Information
If you do not receive accurate traffic information for Apple Maps, Google Maps, Waze or SigAlert, or any other live traffic news app, call 511. This is the number that provides local traffic conditions and updates, and it should work on all vehicles.
However, carriers must work with each state to implement this so that there may be some states that still have ports not associated with particular carriers. For example, Sprint 511 does not work in Alabama, Alaska, Arkansas, Connecticut, Delaware, Michigan, Montana, North Dakota and Oklahoma, but in all other states plus DC.
. 8 Viewing your data usage
Typically, you must use the provider's app or widget to get an accurate reading to see how much data you still have on your mobile plan. Some carriers, such as T-Mobile, even include accurate data usage statistics in your Settings app. But there is an easy way to check used data without installing any apps or switching providers.
AT & T: * 3282 # T-Mobile: # 932 # Verizon: # 3282
After calling any of the codes listed above, you should receive either a verbal read from a robotic responder or a text message indicating your overall usage for that month. Note that Sprint has no service for it. You were able to write 1311 to get data usage statistics, but they stopped this service.
9. Forwarding Calls to Another Number
Each carrier has its own way of forwarding calls. AT & T has no codes, at least none that I could find, but that's because lets you customize the call forwarding settings in the Photos section of the Settings app. As for the other big carriers, this setting probably will not be present in this menu, but you can still use the following codes.
For more information about the call forwarding codes listed below, see the Sprint
* 72XXXXXXXXXX website. Unconditional call forwarding to the specified number * 720 ........... Disable unconditional call forwarding * 73XXXXXXXXXX .. Call forwarding only for no answers to the specified number * 730 ........... Disable call forwarding only for no answers * 74XXXXXXXXXX ..Call Forwarding only for when busy to the specified number * 740 ........... Disabling Call Forwarding Busy Only
For more information about the following call transfer codes, see T-Mobile Website  ** 21 * XXXXXXXXXX # ……. Activate the unconditional forwarding to a number
## 21 # ……………… Disable the unconditional forwarding
** 61 * XXXXXXXXXX * SS # …. Change the call forwarding time delay (replace SS with seconds 5, 10, 15 or 30)
** 61 * XXXXXXXXXX # ……. Activate call forwarding if there is no answer to a number
## 61 # ……………… Disable forwarding if no response is received
** 62 * XXXXXXXXXX # ……. Activate call forwarding if it is not reachable
## 62 # …………….. Disable call forwarding if it is not reachable
** 67 * XXXXXXXXXX # ……. Activate call diversion when busy
## 67 # ……………… Switch call forwarding on busy
## 004 # …………….. Cancel call diversion
It is not immediately known if you can or do not enable call forwarding services through your dialer Disable settings in the app settings according to the "Carrier Services" menu.
* 73 ........ Disable call forwarding
This value has little or no value for you in daily life, but it is still interesting to see what happens behind the scenes. Select * # 5005 * 7672 # and press the call key to see what happens.
* # 5005 * 7672 #
Whenever you send someone an SMS or MMS, not an iMessage, the message is wirelessly forwarded to a short message service center (SMSC) over a specific phone number. This number could be useful for troubleshooting failed outbound text messages with your wireless service provider.
The phone numbers are off, and the phone handles are in. Okay, not really, but there's a service called StarStar Me, which is an add-on service that you need to pay monthly with your carrier. If you want to give it a try, just choose ** me or ** 63 from your iPhone to subscribe to the service.
You can choose a nickname that a user can call instead of an actual phone number. For example, if your nickname is The Dude, then you can put your personal handle as ** THEDUDE (** 8433833). Other people might call you with this number instead of trying to remember your 10 digits.
** 63 aka me
Yes, we all 911. And yes, that's super easy to choose, especially with Emergency SOS for the iPhone and Apple Watch. But if you want to defy the system, you can choose 112 instead. This is actually the emergency number for countries of the European Union, but you can choose it in the US on a GSM based iPhone from AT & T and T-Mobile to be redirected to 911. With 112 on Verizon Wireless or Sprint nothing will do, so stay until 911.
Since I had 112 above, I could list 911 here as well. However, it is not very "secret". You know what it does. Works for all carriers. You can even write 911 with some vehicles like Sprint if you can not call or call.
Each carrier has its own Dialer Codes, also known as Short Codes, which you can use in addition to any of the above. Some of them only work on specific plans, so your mileage may vary. But it never hurts to try.
These codes were collected in the "Carrier Services" section of the iPhone and on the AT & T website.
* 225 # ..... .Check the balance * 646 # ...... Look at your minutes * 729 ....... Pay your bill * 3282 # ..... See your data and messages * # 08 ....... Voice connect
These codes have been collected from the "Carrier Services" section of the iPhone and the Sprint website
* 2. ... Opens the Self-Service My Sprint Mobile or Sprint Zone menu with an option to access the Care Self-Service IVR and Care Call Centers. * 3 ............. Payments made with Sprint phones via the automated IVR system "Pay by Phone". * 4 ............. Get minute information for each usage category in English, including text messages and current billing cycle data. Find out about the current tariff plan. * 5 ............. Get the information for each type of use in Spanish, including SMS and current billing information. Find out about the current tariff plan. * 11 ............ Pennsylvania - PA Turnpikes: (Bucks, Montgomery, Lebanon, Daulphin, Cumberland, Franklin, Fulton, Bedford, Somerset, West Moreland, Allegheny and Beaver County) Utah - counties Salt Lake and Utah * 12 ............ Pennsylvania - PA Turnpikes: Allegheny County, Parkway West and Parkway East * 27 ............ Louisiana - Lake Ponchatrain Causeway near New Orleans * 47 ............ State Police (only on market basis, only on written requests from city / state) Alabama - nationwide Kansas - nationwide North Carolina - nationwide South Carolina - nationwide * 55 ............ State Police (only on market basis, only on written requests from city / state) Missouri - nationwide Oklahoma - nationwide * 64 ............ New Hampshire - nationwide * 70XXXXXXXXXX ..Cancel Call is waiting on a single call basis * 77 ............ State Police (only on market basis, only on written requests from city / state) Massachusetts - Nationwide Maryland - nationwide Maine - nationwide Rhode Island - nationwide * 277 ........... Colorado State Police - Nationwide (numbers stand for CSP) * 347 ........... Florida Highway Patrol - North, West, Middle and South (numbers stand for FHP) * 394 ........... Texas - Harris County * 477 ........... Georgia State Police - Statewide (Figures stand for GSP) * 577 ........... Louisiana State Police - Statewide (numbers stand for LSP) * 777 ........... Ohio - Jefferson and Belmont Counties * 847 ... Tennessee - nationwide * 911 ........... emergency number (corresponds to 911) * 990 ........... Ohio Turnpike (Williams, Fulton, Lucas, Wood, Ottawa, Sandusky, Erie, Lorain, Cuyahoga, Summit, Portage, Trumbull, and Mahoning Counties) * 8477 .......... Texas - Houston (Harris County) crime stopper line * HP ........... Highway Patrol (only on market basis, only for written inquiries from city / state) * THP ... Tennessee Highway Patrol (only on market basis, only on written requests from city / state) # 77 ............ State Police (only on market basis, only on written requests from city / state) New Jersey - Nationwide Virginia - nationwide # 222 ........... Option 3, to order accessories. # 911 ........... emergency number (as at 911) #CASH .......... Sprint PCS payment card (to find the nearest Prenet location for a payment) #WUN ........... Western Union (to find the nearest Western Union location that accepts PCS payments) 211 ............ Community relations 311 ............ non-emergency police and other government services Texas - Harris County 711 ............ TTY (Telegraph) or TDD (Deaf telecommunications equipment) for the hearing impaired (Telecommunications Relay Service TRS) 811 ............ Customer Solutions (Private Label Services)
These codes were taken from the "Carrier Services" section of the iPhone as well as from the website T-Mobile
ACCOUNT AND MOBILE INFORMATION * # 9999 # .... Check the software version (Motorola and Samsung) * # 0000 # .... Check the software version on Nokia phones # 225 # ...... Check your balance and the last payment (225 = BAL) # 263 # ...... turn off "Binge On" (263 = BOF) # 264 # ...... Check "Binge On" Status (264 = BNG) # 266 # ...... turn Binge On on again (266 = BON) # 326 # ...... Check your family allowances (326 = FAM) # 646 # ...... Check your minute usage (646 = MIN) # 674 # ...... Check your message usage (674 = MSG) # 686 # ...... show your phone number (686 = NUM) # 763 # ...... Turn Off International Data Roaming (763 = ROF) # 766 # ...... Enable international data roaming (766 = RON) # 793 # ...... Reset voicemail password to keep 4 digits of the phone number (793 = PWD) # 796 # ...... Activate / deactivate voicemail password (796 = PWO) # 932 # ...... Check the data used, the data plan and the expiration date. (932 = WEB) # 8294 ...... Find a taxi service for $ 1.75 per use (8294 = TAXI) CALLS SERVICES (BESIDES CALL FORWARDING) * 43 # ....... Turn on the call waiting function # 43 # ....... Turn off call waiting PREPAYMENTS (PREPAID) * 233 ....... Call the Refill Center (233 = ADD) # 225 # ...... Check your account schedule timeframe (225 = BAL) # 263 # ...... turn off "Binge On" (263 = BOF) # 264 # ...... Check "Binge On" Status (264 = BNG) # 266 # ...... turn Binge On on again (266 = BON) # 932 # ...... Check your internet usage (932 = WEB) # 999 # ...... Check your balance and the remaining minutes SCAM ID & SCAM BLOCK CODES # 632 # ...... turn off scam block (632 = OFB) # 634 # ...... Turn off Scam ID # 662 # ...... turn on scam block (662 = ONB) # 664 # ...... Enable scam ID (664 = ONI) # 787 # ... Show Scam Block Status (787 = STS) LINE LINK * 72XXXXXXXXXX .. Enable unconditional call forwarding. Example: * 72 (206) 111-1111 * 42DN .......... Activating call forwarding without an answer * 67DN .......... Activate the phone number restriction (CLIR) for outgoing calls * 73 ............ Deactivate and delete the unconditional call forwarding * 82DN .......... Disable Enable Caller ID restriction (CLIR) for outgoing call * 93 ............ Disabling Call Forwarding on No Answer
These codes have been collected in the "Carrier Services" section of the iPhone and in . Verizon's website
# 225 ....... Check the bill balance (225 = BAL) # 646 ....... Watch your minutes (646 = MIN) # 729 ....... Pay your prepaid bill (729 = PAY) # 768 ....... Pay your bill (768 = PMT) # 874 ....... Find out when the upgrade is eligible (874 = UPG) # 832 ....... Make sure your phone is working after changing the electronic serial number (ESN) or re-enabling it (832 = TEC). # 3282 ...... Show data (3282 = DATA) # 4438 ...... View Gift Credit (4438 = GIFT) # 7623 ...... Access Verizon Wireless Breakdown Assistance for Towing, Jump-Start, etc. Must Subscribe (7623 = ROAD)
If you see any codes not listed above or not working for you, please comment below Code, Carrier and iPhone model. Note that not all codes work, whichever plan you have. For example, generic self-service dialer codes do not work on the simple-choice plan without credit check, but they are likely to work on all other T-Mobile plans.
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