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How to Activate a Cricket SIM Card

By Courtney Voss
8 minute read

What you need to do to activate Cricket service

Cricket SIM card activation happens in one of two ways: online through Cricket's website or by calling their customer service line. You'll need your SIM card number (printed on the card itself), a valid payment method, and either a phone number you want to keep or permission for Cricket to assign you a new one. The process takes about 15 minutes if you do it online, or a few minutes longer if you call — activation is usually live within an hour, though sometimes it takes up to 24 hours for the network to fully recognize your phone.

Cricket is owned by AT&T and runs on AT&T's network, so coverage depends on AT&T's infrastructure in your area. Before you activate, check Cricket's coverage map on their website to make sure service works where you live and work. If you're switching from another carrier and want to keep your existing phone number, you'll need to provide your account number and PIN from your old carrier — Cricket calls this a "port," and it usually completes within one business day.

Key Takeaways

  • You can activate a Cricket SIM card online at cricket.com or by calling 1-800-CRICKET (1-800-274-2538) — both methods take 15 minutes or less.
  • Have your SIM card number, a valid payment method, and either your old account details (if keeping your number) or permission for Cricket to assign a new one.
  • Activation is usually live within an hour, though the network may take up to 24 hours to fully recognize your phone.
  • If you're keeping your old phone number, the transfer typically completes within one business day after you start the activation process.

Activating online through Cricket's website

Go to cricket.com and look for the "Activate" or "Activate a Device" link, usually near the top of the page. You'll be asked whether you're a new customer or an existing Cricket customer adding a line. If you're new, select that option. Cricket will then ask you to enter your SIM card number — this is the 20-digit number printed on the back of your physical SIM card, not your phone's IMEI or serial number.

Next, you'll choose whether to keep an existing phone number or get a new one. If you're keeping your number, Cricket will ask for your account number and PIN from your previous carrier. These are usually on your old carrier's bill or available by calling them. If you're getting a new number, Cricket assigns one automatically. Then you'll enter your payment information — Cricket accepts major credit cards, debit cards, and some prepaid cards — and choose a plan. Plans vary by region and change over time, so check what's currently available in your area. After you complete the payment, you'll receive a confirmation email, and your service should be active within an hour.

Activating by phone with Cricket customer service

Call Cricket's activation line at 1-800-CRICKET (1-800-274-2538). A representative will walk you through the same steps as the online process: confirming your SIM card number, choosing whether to keep or get a new phone number, and providing payment information. Calling can be faster if you have questions or run into problems, because a person can troubleshoot in real time. Wait times vary depending on the time of day and how busy Cricket's lines are — calling early in the morning or on weekdays usually means shorter waits.

If you're porting a number from another carrier, the representative will ask for your account number and PIN. They'll also confirm your identity by asking security questions or requesting a photo ID. After the call ends, you'll receive a confirmation text or email. Your service should be active within an hour, though number transfers sometimes take until the next business day to complete.

What happens if your SIM card doesn't activate

If your phone doesn't show Cricket service after an hour, first check that airplane mode is off and that you have signal bars. Restart your phone — this often forces it to recognize the new SIM card. If you still don't have service, go to your phone's settings and check that it's set to automatic network selection rather than a specific carrier.

If those steps don't work, call Cricket at 1-800-CRICKET. Have your SIM card number and confirmation email ready. Common issues include the SIM card not being fully inserted (push it in until you hear a click), the phone not being compatible with Cricket's network (Cricket publishes a list of compatible devices on their website), or a delay in the network recognizing the new SIM. Cricket's support team can check the status of your activation and resend the network settings to your phone if needed.

Porting your number from another carrier

If you want to keep your phone number when you switch to Cricket, you'll need your account number and PIN from your current carrier. Your account number is usually on your bill; your PIN is a security code you may have set up, or Cricket can send a temporary one to your phone or email if you don't remember it. Some carriers call the PIN a "port authorization code" or "transfer PIN" — it's the same thing.

During activation, Cricket will ask you to enter these details. The port usually completes within one business day, though it can take up to three business days in rare cases. During the port, you may lose service on your old carrier for a few minutes to a few hours — this is normal. Once the port is complete, your old carrier will send you a final bill for any remaining balance. If you're worried about losing service during the switch, some people activate their Cricket SIM a day or two before starting the port, so they have a working phone number while the transfer happens.

Choosing a Cricket plan during activation

Cricket offers several plan types: unlimited talk and text with a set amount of data, unlimited everything, and sometimes data-only plans for tablets or hotspots. Plans and pricing change regularly and vary by region, so the best way to see what's available is to check cricket.com or call 1-800-CRICKET. Most plans include unlimited talk and text in the US, Canada, and Mexico, and some include a small amount of international data.

You can change your plan after activation, so if you're not sure which one fits your needs, you can start with a smaller plan and upgrade later. Cricket also offers add-ons like extra data, international calling, and device protection, though these cost extra. During activation, you'll only be charged for your first month of service — you won't be charged for add-ons unless you specifically select them.

What to do if you need to activate a replacement SIM card

If your SIM card is damaged, lost, or you're switching phones, you may need a replacement SIM. If you're already a Cricket customer, you can order a replacement SIM from cricket.com or call 1-800-CRICKET. Cricket usually ships replacement SIMs for free, though expedited shipping costs extra. Once you receive it, activation is the same process as a new SIM — call or go online, enter the new SIM card number, and confirm your existing account details.

If you're switching to a new phone but keeping the same SIM card, you usually don't need to do anything — just move the SIM to the new phone and restart it. However, if your new phone uses a different SIM size (some phones use nano-SIM, others use standard SIM), you'll need a replacement SIM in the correct size. Cricket can send you one at no charge if you order it through their website or by phone.

Frequently Asked Questions

Can I activate a Cricket SIM card without a phone number yet?

Yes. During activation, you can choose to have Cricket assign you a new phone number, or you can activate first and add a number later. Some people do this if they're not sure whether they want to port their old number or get a new one. You can change your number after activation by calling Cricket customer service.

What if I don't have my old carrier's account number or PIN?

Call your old carrier's customer service line — the number is usually on your bill or on their website. They can provide your account number and either tell you your PIN or send a temporary one to your phone or email. This usually takes a few minutes. If you can't reach your old carrier, Cricket can sometimes port your number without these details, but it takes longer and may require additional verification.

Do I need to activate my Cricket SIM card before I can use it?

Yes. A new SIM card won't work until it's activated. You can't make calls, send texts, or use data until you complete activation online or by phone. Activation is free — you only pay for your service plan.

How long does it take for my Cricket service to work after I activate?

Usually within an hour. Sometimes it takes up to 24 hours for the network to fully recognize your phone. If you don't have service after an hour, restart your phone and check that airplane mode is off. If you still don't have service after 24 hours, call Cricket at 1-800-CRICKET.

Can I activate a Cricket SIM card on a phone that's locked to another carrier?

No. Your phone must be unlocked before you can use a Cricket SIM card. If your phone is locked to another carrier, contact that carrier and ask them to unlock it — this is usually free if your contract is paid off. Once it's unlocked, you can activate the Cricket SIM. Cricket's website has a list of compatible phones if you're not sure whether yours will work.