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SIM Cards

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SIM card

Activate your prepaid SIM card from home.

  • Call your current carrier to ensure your phone is not locked to another carrier, or help to get it unlocked.  
  • Purchase a SIM kit from the carrier that’s right for you.
  • Follow the SIM kit instructions to activate the phone.
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  2. Mint Mobile - 15GB/mo Phone Plan - 3 Months of Wireless Service - Gold

    Minimum Contract Period:
    3 months
    Model: MINT-MEDIUM-03
    SKU: 6022211
    Your price for this item is $60.00

  3. AT&T Prepaid SIM Kit - Multi

    Model: PRPD RFID
    SKU: 6559883
    Your price for this item is $9.99

  4. Ultra Mobile - 1-Month 3GB Prepaid SIM Card - Orange

    Model: UM001049
    SKU: 5706136
    Your price for this item is $19.00

  5. Mint Mobile - 5GB/mo Phone Plan - 3 Months of Wireless Service - Gold

    Minimum Contract Period:
    3 months
    Model: MINT-SMALL-03
    SKU: 6022210
    Your price for this item is $45.00

  6. Boost Mobile - 3 Months 5GB Plan SIM Card Kit - Orange

    Model: BMDPDSHTSIMENR03
    SKU: 6484740
    Your price for this item is $44.99

  8. Mint Mobile - Unlimited Phone Plan - 3 Months of Wireless Service - Gold

    Minimum Contract Period:
    3 months
    Model: MINT-UNLIMITED-03
    SKU: 6434629
    Your price for this item is $90.00

  9. Tracfone - Bring Your Own Phone Dual Mini SIM Pack with Nano/Micro/Standard - Multi

    Model: TFATKTMDUNR-TRI1
    SKU: 6547708
    Your price for this item is $1.00

  10. Simple Mobile - Bring Your Own Phone Dual Mini SIM Pack with Nano/Micro/Standard - Multi

    Model: SMATKTMDUNR-TRI1
    SKU: 6547627
    Your price for this item is $1.00

  11. Cricket Wireless - 3-in-1 SIM Card Activation Kit - Multi

    Model: CRICKET NR BYOD SIM KIT SMALL
    SKU: 6129015
    Your price for this item is $9.99
  12. Sponsored

  13. Mint Mobile - 3-Month 5GB eSIM Prepaid Plan (Instant Delivery) [Digital]

    Model: Mint Mobile eSIM DDP.com 45
    SKU: 6523654
    Your price for this item is $45.00

  15. Mint Mobile - 3-Month Unlimited Prepaid Plan (Instant Delivery) [Digital]

    Model: Mint Mobile eSIM DDP.com 90
    SKU: 6523651
    Your price for this item is $90.00

  16. Boost Mobile - Starter SIM Kit - Orange

    Model: 610214668967
    SKU: 6504697
    Your price for this item is $4.99

  17. Mint Mobile - Prepaid SIM Card Starter Kit - Gold

    Model: MINT-STKIT02
    SKU: 6310601
    Your price for this item is $2.00

  18. H2O Wireless - Smart SIM Starter Kit 3-in-1 SIM Card for Unlocked Phones - Yellow

    Model: H2O WIRELESS SIM STARTER KIT
    SKU: 6421026
    Your price for this item is $1.00

  19. H2O Wireless - Smart SIM Traveler Starter Kit 3-in-1 SIM Card for Unlocked Phones - Yellow

    Model: H2O WIRELESS UNIVERSAL SIMCARD
    SKU: 6419068
    Your price for this item is $1.00

  20. Verizon - Prepaid Bring Your Own Device SIM Card Kit - Multi

    Model: VZW-SIM5GTRANSPP
    SKU: 6554863
    Your price for this item is $9.99

  21. Total by Verizon - Keep Your Own Phone SIM Card Kit - Multi

    Model: TVATKTMVZPOS-TRI1
    SKU: 6554830
    Your price for this item is $1.00

  22. New!Boost Mobile - Starter SIM Card Kit - Orange

    Model: BDDPTMOTSIMENR0
    SKU: 6572488
    Your price for this item is $4.99
1-18 of 25 items
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Buy SIM cards.

What is a SIM card?

A SIM card lives inside your cell phone and is essentially your phone’s ID. It stores contacts and other data, and your phone won’t work without it. A SIM card works by connecting with your mobile phone and your carrier’s cell towers, so the two can communicate. When you upgrade your phone, you bring your SIM card with you to keep your phone number, data plans and more; but since most SIM cards are designed to work only with certain brands and carriers, they won’t fit just any phone. Whether you’re shopping for a new smartphone or refurbished cell phones, check out Best Buy for great deals every day.

How do I use an unlocked phone?

If you love to travel and want an international SIM card, or you simply don’t want to commit to a carrier, an unlocked phone might be right for you. Unlocked phones are packed with all the features you want, plus you can move from carrier to carrier whenever you like, making it easier to transition internationally. Unlocked phones use an interchangeable SIM card that can connect to multiple Global System for Mobile (GSM) networks, like Sprint and Verizon in the United States. Prepaid phones work in a similar way, in that you can avoid an expensive wireless plan by paying month-to-month, but they are compatible with only one specific carrier.

What are the types of SIM cards?

From an AT&T SIM card, T-Mobile SIM card, or Verizon SIM card to other prepaid SIM cards, they usually come in one of three popular sizes: Regular SIM cards, micro SIM cards and nano SIM cards. A nano SIM card offers the same features as larger cards do, but in a more compact package. Many phones are equipped with cutouts for all three sizes, so you can decide which version you want. If your phone fits only one type of SIM card, you can try using an adapter, which allows nano SIM cards to fit into micro SIM or regular SIM slots.

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