How to Activate Airtel Sim?

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

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  • UPDATED ON: 11 Mar 2020

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 activate your Airtel 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. Type 1 and send it to 121.

  4. The new SIM will activate within 5 minutes.

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 Airtel SIM 4G?

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 sim after registration in this article.

  • 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.

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

Visit your nearest Airtel showroom with 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 activate Airtel SIM, which is deactivated?

As per TRAI regulations, services to your Airtel Prepaid Mobile connection gets deactivated if it is having less than Rs.20 balance and if there is no usage for 90 days.

Your number will be reactivated within 15 days if you make payment of Rs.20.

  • You need to request for reactivation via email to or customer care

  • Do visit nearest Airtel store and submit reactivation request there

  • Make sure to provide Address and Photo Id proofs

  • You may receive a confirmation call, and then your number will be reactivated

These are all the ways of how to activate your Airtel SIM. This article will be helpful for you if you have recently switched to Airtel connection and 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.

Frequently Asked Questions

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. How long does it take to activate Airtel 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.

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