How to Activate Airtel Sim? (2022)

If you are an Airtel user, get to know the various ways of activating your Airtel Sim. 

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Are you an Airtel user? If you want to know how to activate your Airtel SIM, then you should stick to this article. 

You must be knowing that Airtel provides GSM, 3G, 4G LTE, 4G+ mobile services, fixed-line broadband and voice services depending upon where you use the SIM service. 

It is the third-largest mobile network operator in India, and you would surely prefer to buy one Airtel SIM for yourself as it is one of the fastest networks too. 

You can also learn some of the methods as to how to activate airtel sim card online. To know “How to Activate Airtel Sim”? Keep reading!

If you are an Airtel Prepaid user, you can see Airtel Unlimited Prepaid Recharge Offer, and avail best offers. 

How to activate Airtel SIM card? 


If you have bought a new Airtel SIM for yourself, you need to know the steps to How can I activate my new Airtel 4G SIM Card

  1. Just send a simple SMS “SIM SPACE NEW_SIM_NUMBER” from your Airtel mobile number and send it to 121.

  2. You will get an SMS, “Reply 1 to confirm.”

  3. The new SIM will activate within 5 minutes.

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How to activate Airtel prepaid SIM?

If you use Airtel Prepaid SIM, make sure you read the steps carefully and apply them correctly for your SIM activation process. 

  • After completion of the KYC process of your new prepaid connection, wait for 30-60 mins. 

  • You will receive signals on your new number after which you need to tele-verify your number.

  • To tele-verify the number, dial 59059 for Airtel. 

  • On dialling the above number, you get directed to an auto-recorded call. 

  • Follow the steps as directed on the auto-recorded call. 



How to activate Airtel postpaid SIM?

The activation of the postpaid SIM is slightly different from the prepaid number. If you wish to activate your Airtel postpaid number, follow the two-step verification process. To know how to activate airtel SIM for postpaid, you can follow the listed steps. 

  1. Tele Verification- For tele verification, you need to dial 59059 for Airtel to receive signals on your new connection. 

  2. Address Verification- An executive from your Airtel operator will visit your location to verify the address that you have submitted in your documents as proof.  

How to activate new Airtel SIM, 4G Airtel Sim?

Let’s check out how to activate Airtel SIM to get 4G connectivity


After activating 4G, you can enjoy HD quality voice calls and faster call set up time. To know how to activate Airtel sim after registration, follow the simple steps which are also applicable for MNP users.

If you use 4G on your mobile phone, then get to some of the ways as to how to activate airtel 4G SIM on your smartphone. 

  • You need to SMS the 20 digit SIM number from your existing Airtel connection to 121.

  • To confirm your request, reply by typing 1. 

  • Wait for a while for the Phone to get disconnected from the network. 

  • Remove the old SIM and insert your new SIM in the slot.

  • Switch on the Phone. 

  • Your new 4G Airtel SIM will be active now! 

If you are a new or existing user of Airtel, you can get information about Airtel 4G SIM Activation, here.

How to activate Airtel SIM after porting? 

If you are using a different SIM connection, you can port it to Airtel. You must be wondering about how to port number to airtel, for this answer read the short steps listed for your ease. You can also know some of the ways as to How to activate Airtel 4G SIM and get free 4G Data after registration in this article.  Also, check out Airtel’s unlimited recharge plan 2022 by clicking here

  • Remove your SIM card and insert it into your handset and switch it on.

  • You need to enter a PIN. Send the PIN number to 1234 by default.

  • Enter this number and press OK. 

  • Dial *123# to activate your SIM card.

  • If you do this correctly, your connection will show 'Airtel' on the screen.


New Guidelines for MNP Process (2022)

Check out the latest guidelines for MNP related especially when you are choosing Airtel over others. 

  • The overall time for porting within the same state has been reduced from 96 hrs to 48 hrs.

  • There is no change in the porting timeline for national MNP [porting to different state]

  • UPC will get generated only post validation of your account

  • The UPC will get delivered within 5 min of placing a request via SMS

  • The validity for UPC has been reduced from 15 days to 4 days

  • You can also cancel your port-out request within 24 hrs of document submission

  • In case the payment is overdue with the previous operator, the mobile number will be disconnected from the current operator even after port-in is done

  • In such a scenario, the number can be re-activated ONLY if the payment is done within 60 days of the service disconnection


How to upgrade Airtel Prepaid 2G/3G to 4G? 

Visit your nearest Airtel showroom with a 4G LTE-based Phone, Your existing Active SIM card in a phone, One Passport size Photo, Address/ID Proof copy, Rs. 50 for the payment for a new SIM. 

  • Select Prepaid in the menu. 

  • Select SIM SWAP. 

  • Enter your phone number. 

  • SIM Swap Process can take up to 15 mins to complete. 

  • The CC rep mentions a SIM number.

  • Use your existing Phone to send 4GSIMSWAP NEW_SIM_NUMBER to 121. 

  • “Reply 1 to Proceed” message and send it to 121. 

  • Pay Rs. 50 for the new SIM Card.

  • Once activated, your old SIM card will no longer work.

  • Insert your 4G SIM in your 4G Phone.

How to Reactivate your Deactivated Airtel Number?

As per TRAI regulations, Airtel services to any prepaid Airtel mobile connection gets deactivated for subscribers with less than Rs.20 balance.

If there is no usage of your Airtel number, that is, if you are not performing incoming or outgoing voice/video calls, SMS, mobile internet or data usage, VAS usage or purchases with balance) for up to 90 days. In that case, your Airtel number will get deactivated. 

Your Airtel number gets deactivated only if you are not using it for a long time. The Airtel service providers further request to deactivate your number if it is not getting used.

If you are owing to an Airtel number, make sure you continuously recharge it otherwise there is a chance that it may be deactivated. In some cases, you will also not be eligible to get your number back. 

Prepaid mobile network users can reactivate their number within 15 days from the date of deactivation, by making a small payment or recharge of Rs.20.

Follow the below-listed steps if your Airtel mobile number is deactivated. You can again reactivate it within 15 days.

  • Initially, try to request reactivation through email to

  • You can even talk to the customer care executive. 

  • Likewise, you can try visiting the nearest airtel store and submit a reactivation request.

  • All you have to do is take all your residential address and photo Id proofs.

  • After that, you may receive a confirmation call, and then your number will be reactivated.

How To Activate Airtel eSIM - Process To Activate eSIM

Since nowadays everything is becoming digital, you can buy an e-SIM instead of a regular SIM. Follow the steps below to activate an e-SIM in your smartphone. 

Step 1: First of all, convert your physical SIM to eSIM or existing eSIM to eSIM. Start by SMS eSIM<>registered email Id to 121. You would need to reply with "1" to confirm the eSIM change request within 60 sec.

You will receive another SMS from 121 to provide consent over a call; if you fail to do so, your request gets cancelled automatically. 

Step 2: Enter the QR Code received on your registered email id after completion of Step 1. You will now receive a QR Code on your registered email id.

The eSIM activation can take around 2 hours. Just scan the QR Code immediately to proceed further. Your existing SIM will continue to work during this period.

  • Go on "Settings"

  • Choose "Mobile Data" 

  • Click on "Add Data Plan" 

  • Scan QR code" received on mail 

  • Label your new eSim 

Essential Points before activating your eSIM

1. The QR code is applicable for just one-time use on one mobile only. After scanning, please ensure you complete the process of adding the Carrier.

2. You should not select the "Delete" option from the eSIM settings as this will permanently delete the eSIM profile.

For Prepaid Customers

If you face issues while activating the eSIM in your phone, you can follow the steps given below. 

  • SMS NESIM to 52212 (for prepaid numbers in Andhra Pradesh, Telangana, Kerala, Tamil Nadu, Karnataka).

  • NESIM to 51619 (for prepaid numbers in rest of India).

For Postpaid Customers

  • If you do not get an email with QR Code within 30 min or you stop the scanning process midway, please SMS NOSIM to 121 to avoid disconnection of your physical SIM.

  • If you have mistakenly removed the eSIM profile, while your physical SIM is still active, you can SMS NOSIM to 121 to avoid disconnection of your physical SIM.


How to Shift in Airtel 

You can switch to Airtel via two methods, online or visiting the store. Let’s check out the step-by-step process. 

Via Online

  • Visit us at:

  • Select your preferred plan by clicking on "buy now" and enter your details to schedule KYC pickup & SIM delivery

  • Generate your porting code or UPC by sending a short SMS “PORT to 1900 You will receive the code via SMS from 1901. Please note that the code is valid only for 4 days

  • Our executive will visit your location at the selected time slot for SIM delivery and activation

  • Keep your documents handy for identity and address proof. Checklist of valid docs here.

  • Share unique porting code, valid address & identity proofs with our executive

  • It will take us around 48 hours (within the same state) & 4 days (interstate) to switch the number from your current operator to Airtel

  • You can track the real-time status of your order on the latest version of the Airtel Thanks app. Click here to download and login through your port-in number

Via Visiting Store

  • Generate Unique Porting Code (or UPC) by sending an SMS PORT to 1900

  • You will receive the code via SMS from 1901. Please note that the code is valid only for 4 days* Visit the nearest Airtel store with your documents to complete the KYC and get a FREE SIM. For a list of required documents, click here

  • Share unique porting code, valid address & identity proofs with our Airtel Friend at the store

  • Relax. Your SIM will be activated within 48 hrs (subject to successful address verification)

  • You can track the real-time status of your order on the latest version of the Airtel Thanks app. Click here to download and login through your port-in number


How to Switch from Airtel Prepaid to Postpaid 

Here are the steps through which you can switch from Airtel Prepaid to Postpaid easily. 

  • Go to the Airtel website by clicking here

  • Click on the prepaid dropdown button and click on switch prepaid to postpaid. 

  • Once you choose the plan that you would give the option to opt to fill in the details. 

After the physical and digital verification, your postpaid plan gets activated. 

These are all the Easy Steps for Airtel 4G SIM Activation for existing, new and MNP Users. This article will be helpful for you if you have recently switched to an Airtel connection and are unaware of all the Airtel SIM activation methods. 


Also, if you want an answer to How to Check Offers in Airtel, you can know all the offers here. 


FAQs On Airtel Postpaid and Sim Porting to Airtel

Q1. How to activate Airtel 4g sim?

A1. After you request a new SIM, Airtel will try and deliver it at your address as soon as possible. To change the SIM, you need to send the 20-digit number at the back of the new card to 121 prefixing SIM.

Q2.What time does it take to activate a new Airtel 4G SIM?

A2. In the case of prepaid, it will get activated within 5 minutes. Visit the Airtel store with your aadhar card, take your sim activated and dial 59059. 

Q3. How can I activate my Airtel SIM online?

A3. Try to request reactivation via email to or customer care. You can also visit nearest Airtel store and submit reactivation request. Do not forget to provide Address and Photo Id proofs.

Q4. How can I call Airtel customer care?

A4. Dial 121 which is chargeable at 50p for 3 mins for agent access from your Airtel mobile phone anytime. For any complaints, service activation or deactivation and tariff change requests, you can call 198 (toll-free) from your Airtel number.

Q5. Why is my Airtel SIM not working?

A5. Click on Settings>>Backup & reset>>Network settings reset>>Reset settings. Check the SIM Card, as sometimes when the SIM card may not be properly at its place, you may find a problem of no signal or an error showing up on your screen.

Q6. How can I know if my Airtel SIM is active?

A6. To check if an Airtel mobile number is active or not, either call your Airtel number. You can call the Airtel customer care number 121 and know whether your Airtel number is active or not.