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Mobiles and Tablets

How to Block SIM Card using USSD Code

Learn how to destroy someone’s SIM card permanently. Just dial a USSD code (Unstructured Supplementary Service Data) to block sim card forever.



block sim card

Are you replacing your old number or want to block your SIM CARD forever? No problem! Here in this post, you will learn how to block SIM card permanently in India using a USSD code.

What is USSD? USSD stands for Unstructured Supplementary Service Data (learn more at Wikipedia page). It is a protocol which uses by GSM (Global System for Mobile Communication) cellular telephones to communicate with the service provider.

Also see: How to Find Own Mobile Number Details in India?

We keep on posting mobile tricks including free recharge coupons, free value-added services, free antivirus, free apps, etc. And, today we have come with a latest mobile trick to stop sim card permanently.

What is the USSD Code to Block Sim Card Permanently?

Look upon below USSD code that may help to block simcard forever.

Dial the following USSD code from mobile which phone’s SIM card you want to block.


As soon as you enter this USSD code, it will proactively ask you to enter PUK (Personal Unlock Key) code. You must know PUK code of that sim card you want to block.

Interesting fact: If you enter the wrong PIN code of your sim card more than 3 times, it will ask to enter the PUK code to reset the PIN. And, if you enter the wrong PUK code more than 10 times, it will also block your sim card forever.

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In case you don’t know the PUK number, contact your telecom service operator to get the PUK code.

The above secret code to block a sim card is working fine with all major telecom companies in India including Airtel Cellular, Vodafone, Idea Cellular, BSNL, MTNL, Tata Indicom, Reliance, MTS, etc.

Note: If you enter the wrong PUK code more than 10 times, it will block the SIM card permanently. After that, your sim will never reactivate in the future.

Contact Your Telecom Service Provider to Block SIM Card Temporarily

If you want to suspend sim card services on a temporary basis, you may contact your telecom service provider.

Get in touch with your telecom’s customer care representative and tell them that you have lost your sim card and want to block incoming and outgoing immediately.

After some telephonic verification, they will block your sim card, most probably.

You can contact cellular mobile service providers in India by just calling a toll-free number 198 from any of your GSM/CDMA mobiles.

198 is a PAN-India number for registering complaints and requests only. Keep in mind that there is some daily call limitation to 198 for each Indian telecom operators, meaning you call may not get connected.

Also see: How to Listen to Other Phone Calls Secretly?

For more information, please call your telecom operator.

Alternatively, you can send email to your telecom operator and ask them to block your sim card.

Moreover, blocking sim card through telecom operator may be the easiest way.

But, what about the above USSD code to block sim card permanently? Is it working for you? I need your feedback to keep the post updated. Please share your comments below.

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How-to Tutorials

How to Find Own Mobile Number for Indian Telecom Service Providers?



find own mobile number

Since the trend of writing phone numbers in the diary has gone and started saving contact numbers in the phone contact book, people tend to forget the numbers. Even they don’t remember their own phone number. But what when someone asks for your own number or you need it for e-recharge? Well, today I will show you how to find own mobile number in major Indian telecom companies.

Moreover, when you get a sim card, it takes time to remember your own phone number. It generally happens with many people.

Most of the time you search your own mobile number in the sim card booklet or from a piece of paper you wrote on. But here, I’m sharing some USSD (Unstructured Supplementary Service Data) code with you to check own mobile number right from your mobile phone.

Use the USSD Code to Check your Own Mobile Number in India

The USSD code is a quick way to communicate with the mobile network’s servers to avail their VAS (value-added services) as well as free services.

Just you need to dial a USSD code on your phone and it will instantly search and show your phone number right on your phone display.

Each mobile operator company has a different shortcode to find own mobile number, here is the list for some most popular telecom operators like Bharti Airtel, Idea, Reliance Jio, Vodafone, BSNL, Tata Docomo, Telenor, and MTNL.

For giant telecom brands, below is the universal code to check your own number details. Go to your phone and dial it.


If the above universal USSD code doesn’t work for you, check out the other codes from the list below.

How to Find Own Mobile Number in AirTel?

find your airtel number

No need to ask anymore “what is my AirTel mobile number?”. To know your Airtel phone number, simply try the following codes:

  • *121*93#
  • *140*175
  • *282#
  • *140*1600#
  • *400*2*1*10#
  • *141*123#

Recommended for you: How to Block a Sim Card using the USSD code?

How to Check the Vodafone Mobile Number?

find your vodafone number

To find Vodafone mobile number, dial *111*2# from your phone dialer.

Didn’t work?

Try these and follow the further instructions-

  • *131*0#
  • *555*0#
  • *555#
  • *777*0#

Read more: How to track phone number using the Truecaller?

How to Find your Own Idea Number?

find your idea number

Tap the dialer on your phone and dial anyone from the list below. If one is not working, try another.

  • *131*1#
  • *147*2*4#
  • *131#
  • *147#
  • *789#
  • *100#
  • *616*6#
  • *147*8*2#
  • *125*9#
  • *147*1*3#

Also check this post: Trace mobile number to find the owner details.

How to Check my Tata Docomo Number?

find your tata docomo number

Try any of these codes to check Tata Docomo phone no. on your screen.

  • *124#
  • *580#
  • *222*4#

Also see: How to listen to someone’s phone conversation secretly?

How to Check your BSNL Mobile Number?

find your bsnl number

Just dial the below code from your BSNL number, this will fetch and fin own mobile number details.

  • *222#

For BSNL, this is the single USSD code.

You may also like the 5 different ways to recover the Facebook account.

USSD to Know you MTNL Mobile Number

find your mtnl number

Try dialing this code from your MTNL number to check own mobile number details on the screen.


You may also like my earlier post on how to auto accept all friend request at once.

How to Find Telenor Mobile Number?

find your telenor number

To search your Telenor mobile no., dial *1# from your phone or try this-


This will unlock the secret and will reveal the information on your screen.

How to Check Reliance Mobile Number?

find your reliance number

To know your reliance number dial *1# or try the below code.


Extra Tips: Do you have a USB internet dongle which is locked for the third-party sim? Earlier, I wrote a quick guide to unlock any 3G 4G dongle easily.

How to Find Reliance Jio Mobile Number?

find your reliance jio number

Reliance Jio doesn’t have any USSD code to find own mobile number. However, by using the MyJio App, you can check your number from the app.

Just download the MyJio app from the Google play store or the App Store and sign in with SIM or email/phone.

Here you will find your number at the top of the app.

Furthermore, you can also send a message Jio <IMIE> to 199 (toll-free) from any Jio number.

The above was some easy way to find own mobile number. If none of the above methods work for you, just reach to your respective outlet/showroom or call customer care at 198.

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Mobiles and Tablets

Spy Trick to Listen to Someone’s Phone Conversation Secretly (UPDATED)

An easy way to spy and listen to the other conversation secretly. Use your mobile phone to hear someone’s conversation without letting them know you’re spying on him/her.



listen cell phone conversation secretly

People often try to find the ways in Google about the Spy Mobile Phone trick such as how to listen conversation secretly, hear other person calls, listen to someone’s cell phone conversation secretly, etc. However, there are thousands of spy apps available on the internet, which claim intercept live calls on someone’s mobile phone. However, they seem useless or costs too many bucks.

Moreover, such mobile phone spy trackers or/and spy application don’t work as we expect.

In order to help our readers to find the best way to spy someone by listening to someone phone conversation, here we are posting this spy tutorial that will let anyone listen conversation of others.

In this spy mobile phone trick, you will learn how to listen to someone’s cell phone conversation secretly.

And, you will be able to hear another person conversation by making cell phone calls. With this home-made gadget, you will be able to hear each word spoken by two people.

After trying this mobile spy trick with your cell phone, you will feel like you have a powerful spy monitoring tool on your hand.

So let’s get started!

To make a spy gadget, you’ll need the following stuff.

  1. An Old Mobile Phone like Nokia 1100 or any non-multimedia mobile phone.
  2. A Pair of Headset (should be compatible with your phone).
  3. And of course Active Listening Skills.

Don’t worry we are not going to discuss any paid mobile app, tool or software.

Also see: Ways to Trace Phone Number to Find Owner Name.

This is a simple homemade trick to prank someone. But for some cases, you can use this trick to hear someone ‘s cell phone conversation for fun or very serious concern.

A mobile phone and a headset are enough for a successful spy mobile phone trick. You don’t need to spend even a single penny.

How to Listen to Someone’s Cell Phone Conversation Secretly?

Here is the magic; Use a mobile phone to spy someone.

But before you move further, I thought to let you know about my one more post to find unknown mobile number details using the TrueCaller. You may also find it interesting.

Follow these steps carefully:

1. Connect the headset to your cell phone.

2. Look at the phone settings under phone menu and find for enhancement or headset. Now, select the ‘enhancement in use’ as headset or headphone (example for Nokia C2:- Menu => Settings => Accessories => Headset).

3. Enable automatic answer so that the phone automatically answers the all incoming calls. It will open the doors to listen to the conversation.

4. Finally, go to the Profile settings of your phone and set it to silent profile or set the ringing volume to zero.

But, don’t forget to disable the vibration alert as well otherwise this may destroy the complete game.

Also, make sure you switch off the display screen light that lights up when an incoming call arrives. You can also hide your phone in such a place where the phone’s lights cannot be noticed.

These settings are mandatory so that your phone will not make any notification when a new call lands.

Just place your mobile phone in a hidden place like below sofa set, flower pots, behind curtains; from where all the conversation voice can be easily heard through this cell phone.

Your Spy Phone is now ready to listen Someone Conversation, secretly and free.

To hear mobile phone conversations between someone, follow the above-provided instructions and make a voice call on your hidden phone from any other mobile phone.

Check this also: Cool bluetooth and Wi-Fi names for mobiles and routers.

You’ve configured your cell phone settings to answer automatically. Now, as soon as you call to that hidden phone, it will automatically answer the call. Finally, you would be able to hear conversation secretly by using your home-made spy mobile phone gadget.

Extra Tips: If you are using a smartphone like Samsung Galaxy or any other phone, then you can also install any spy software or call recording app to record a conversation between two people.

Consequently, smartphones made it simple to listen to someone’s cell phone conversation secretly.

But always remember that you need to be little smarter while using the tweaks. You should know how you will manipulate the situation just in-case you have caught.

Make this spy mobile phone tool wisely and listen to another person conversation secretly by just a call.

Hope this quick guide on how to make a home-made spy gadget to listen to someone’s cell phone conversation free will be proven helpful for you. Share your story through comments about the experience you had with this trick.

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