Download Article Download Article

An Unstructured Supplementary Service Data (USSD) code is a code that is programmed into your SIM card or your cell phone to make it easier to perform certain actions. When you know the code for what you want to do, you can run it with a few simple taps.

Things You Should Know

  • USSD codes can perform many tasks, such as displaying the IMEI, changing your SIM PIN, displaying carrier information, and checking your billing summary.
  • Enter a USSD code the way you'd dial a phone number. Just open the Phone app and tap the numbers and hash codes to dial them.
  • Depending on your phone, the USSD code may run instantly. Other times, you'll have to tap the Call button.
Part 1
Part 1 of 2:

Running a USSD Code

Download Article
  1. This app can be found on your home screen, on the "All Apps" screen, or, on simpler cell phones, on the lock screen.
  2. Some start with *, others #, and others *#.
    Advertisement
  3. Make the phone call. When the code is running, you will see "Please wait..." (iPhone) or USSD code running... (Android) or something similar on the phone screen. If the code is invalid, you will get an error.
  4. Advertisement
Part 2
Part 2 of 2:

Knowing What Codes to Run

Download Article
  1. Check your IMEI. The most common reason why USSD codes are useful is because you can check crucial information about your phone. To check your IMEI, dial *#06# and the IMEI will automatically pop up on your screen.
  2. Dial **04* followed by the old PIN, then *, followed by the new PIN, then *, followed by the new PIN again, then #. For example, to change the PIN from 1234 to 4321, dial **04*1234*4321*4321#.
  3. This code will vary from carrier to carrier. On AT&T, the code for checking how much data you have left is *3282# (*DATA#).
  4. To do that, dial *3001#12345#* and call the number. Here, you can view information about your SIM card and your phone.
  5. Read the Wikipedia article on it, as well as conduct research on your carrier's website fo USSD codes that pertain specifically to it.
  6. Advertisement

Community Q&A

Search
Add New Question
  • Question
    Can fraudster withdraw money from my account through USSD without my phone?
    Aasim
    Aasim
    Top Answerer
    No. USSD codes are really only used for changing carrier settings and for checking your phone's IMEI.
Ask a Question
200 characters left
Include your email address to get a message when this question is answered.
Submit
Advertisement

Video

Tips

Submit a Tip
All tip submissions are carefully reviewed before being published
Thanks for submitting a tip for review!

Warnings

  • Some USSD codes, such as SIM PIN codes, can cause damage to your SIM card if misused. Entering the SIM PIN incorrectly three times locks the SIM card until a PUK is given, which you only have another three attempts to unlock before the SIM card is rendered useless.


Advertisement

You Might Also Like

Activate a Double Tap ScreenHow to Activate a Double Tap Screen on Android
Fix Mobile Network Not Available11 Possible Fixes to Solve the "Mobile Network Not Available" Error on Android
Why Does Your Phone Say There Is No Sim12 Easy Fixes for When Your Phone Says There's No SIM Card
Get Water Out of Charging PortSafely Remove Water from a Charging Port on Android & iPhone
Make Your Mobile Phone Number Appear As a Private NumberMake Your Mobile Phone Number Appear As a Private Number
Turn Off Keyboard SoundMute Keyboard Sounds on Your Android, iPhone, iPad, or Laptop
Use a SIM Card to Switch PhonesUse a SIM Card to Switch Phones
Wake Someone Up over the PhoneHow to Wake Someone Up over the Phone
Why Does Your Phone Say There Is No ServiceWhy Your Phone Says No Service: 11 Issues and Solutions
Play Music While Recording6 Simple Ways to Play Music While Recording Video
Find the IMEI or MEID Number on a Mobile PhoneFind the IMEI or MEID Number on a Mobile Phone
Why Does Your Phone Say Emergency Calls OnlyWhy Does Your Phone Say Emergency Calls Only? 9+ Ways to Fix It
Attach Phone CharmsAttach Phone Charms
Eid NumberHow to Find the 32-Digit EID Number on iPhone and Android
Advertisement

About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, volunteer authors worked to edit and improve it over time. This article has been viewed 212,892 times.
How helpful is this?
Co-authors: 5
Updated: April 12, 2024
Views: 212,892
Categories: Cell Phones
Thanks to all authors for creating a page that has been read 212,892 times.

Is this article up to date?

Advertisement