Useful Guide to Activate ATT Prepaid SIM Card Online for Canada, Mexico and USA

It is a great and good idea to buy an AT&T SIM card. Then you need to understand that activation must take place before you can make use of the SIM card. Without activation, the AT&T SIM card is as useless as anything in your hand. Therefore, in this article, you will be guided through the complete process to Activate AT&T Prepaid SIM Card Online

Without the proper activation, on your new AT&T Prepaid SIM Card, you will not be able to make national and international. Not only that, you will not be able to send text messages as well. With this, you now see, that it is mandatory and compulsory to activate an AT&T SIM card.

AT&T SIM Card Activation 2022

The activation process depends on the Phone, Device and Online. AT&T has updated how their SIMs can be activated online.

You must make sure your phone is unlocked. These SIMs only connect to the network in the US, Canada and Mexico. If your phone is locked, you won’t any connection in the US.

Therefore, AT&T Prepaid SIM Card can be activated through different means. Let’s know about all these methods one by one in detailed steps for better understanding.

Activate AT&T Prepaid SIM Card from your Device

The first process of activating the AT&T SIM card is through the devices. Therefore, you need to follow the steps in this part of the article to get your SIM Card to function well

Step 1 ====> Make sure your device is fully charged, if not, charge it now

Step 2 ====> Insert your AT&T prepaid SIM card into your device

Step 3 ====> After which you will receive a message in your from the AT&T team

Step 4 ====> Open the text message and click on the unique URL sent on the text message

Step 5 ====> On the page that opens as the result of the link, enter your details in the space provided

Step 6 ====> The details includes SIM ICCID and IMEI will be auto-populated. Enter your five-digit zip code and then enter the passphrase code as given below.

Step 7 ====> Then, click on the Continue button and select the Activate 1 device or Activate more than 1 device according to your preference.

Step 8 ====> You will be redirected to the plan section, choose your preferred plan and select your desired option for auto-pay (Yes or No)

Step 9 ====> Now, you need to agree to terms and Conditions, click on the Continue button

Step 10 ====> Now, enter your email address and confirm your mail, then click on the Next button

Step 11 ====> On the payment section, select your prefer payment option

Steps 12 ====> Enter necessary payment details and make payment for your plan, and then select continue.

Step 13 ====> After that, please restart your devices. You should receive another message, open it

Step 14 ====> Click on the link to the text message, after which you need to set a new password and PIN.

Step 15 ====> Click on the submit button to submit your details.

Step 16 ====> An email will be sent to you with a verification code on it. Enter the verification code in the space provided and click on the submit button.

Step 17 ====> Now your SIM and device will be activated successfully.

Once you are able to complete the processes in this part of the article, you should be able to activate AT&T Prepaid SIM Card using your Device

AT&T SIM Card Online Activation Process

The next process of activation AT&T Prepaid SIM card is through the online process. But, before we move on with the activation process. You need the following at your disposal.

====> Your phone must be unlocked

====> Know that, AT&T prepaid SIM card works only in the Canada, Mexico and the US

====> You need to have the necessary details before you start the online activation journey.

====> SIM ICCID, this is the 20-digit long number located on the back of the SIM card.

====> IMEI, in other, to access your phone IMEI number on an Android phone, dial *#06# on your phone.

====> Meanwhile, on iOS, simply go to the settings ====> general ====> about where you will find the IMEI section, now click on it to find it out your IMEI number.

====> Your Email

====> Your ZIP code

Only Activation Process in Details

Now that you know the requirement, let’s start the process in detail.

Step 1 ====> Open your favourite browser on your Personal Computer or mobile smartphone

Step 2 ====> On the search bar, visit link.

Step 3 ====> On the page that opened, enter your SIM ICCID, IMEI, and ZIP code correctly in the field given and click on the continue button.

Step 4 ====> Now, enter your Email Address, confirm your email address by entering it into the space provided

Step 5 ====> Select your preferred plan on the new page

Step 6 ====> Choose pinion on auto-pay, click yes or no as per your requirements

Step 7 ====> Now agree to the terms and conditions, click on the Continue button to proceed

Step 8 ====> On the payment section, choose your payment method among the listed options by clicking on the down arrow

Step 9 ====> Now select the AT&T Prepaid SIM card and then enter your card number or PIN on the space provided.

Step 10 ====> After which you need to click on the Continue button and complete the activation process.

Your SIM card and the device will be activated once you complete all these procedures. Make sure to note down your device number to remember it.

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Activate US AT&T Prepaid SIM Card Using Phone

On the other hand, you can as well activate the AT&T Prepaid SIM card on your phone. The process of using a phone is simple and straightforward.

In other to activate US AT&T prepaid card over the phone, you need to call the AT&T team on this phone number 8774260525.

Make sure you have all the required details as mentioned above in the article. The details include ICCID, IMEI, and your ZIP code.


You have done well to activate the AT&T Prepaid SIM card. It is now clear that you can activate your US AT&T prepaid card in three major ways.

It can be through the online process, phone activation process or the process of your device. Any of the processes or methods in the article has helped us to activate AT&T Card.

After activation, you can now start using your card to make calls, national or international and as well send text messages.

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