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Sign up for or manage your Build-A-Plan

Build-A-Plan lets you design a wireless plan to fit your life. Start with a base plan, then add the features you want, so you only pay for what matters to you.

Create a plan

About Build-A-Plan

Build-A-Plan works with an unlocked, AT&T-compatible smartphone with eSIM. You begin with a base plan and update the features as your needs change, so your monthly cost is based on the features you choose.

When you create your Build-A-Plan account, you can choose to transfer your current number or get a new one. To transfer your number from another provider, make sure you choose Transfer my number and provide the requested info from your current provider, including your number transfer PIN.

Sign up for Build-A-Plan

  1. Go to att.com/buildaplan.
  2. Select your plan. The default plan includes unlimited talk and text and 1GB of data.
  3. Choose your data and hotspot options, if you want to add them. If you want hotspot data, make sure you have an equal or greater amount of wireless data.
  4. Enter your address and select Submit. Then select Continue.
  5. Provide your device IMEI number (your EID number might also be required; you can find these by pressing *#06# on your smartphone).
  6. Follow the steps to create an account and password, transfer your phone number or get a new one, and add your payment info.

FYI: Build-A-Plan currently supports single-line accounts only. If you need another line, each line or user will need their own account.

Manage Build-A-Plan account

Check Build-A-Plan usage and balance

To view your usage details:

  1. Sign in to your Build-A-Plan account.
  2. Locate Data overview, then select See usage details.

Tip: You can find your Build-A-Plan monthly details and cost on the My wireless page.

Build-A-Plan payments

You can’t change your payment date, but you can change your payment method. To update your Build-A-Plan payment method:

  1. Go to your payment center. Sign in, if asked.
  2. Select Payment Methods, then Manage.
  3. Choose Add a new payment method.
  4. Follow the prompts to enter your credit card details and save.

FYI: Build-A-Plan requires AutoPay and will automatically renew on the same date every month. If your payment method fails when your subscription auto-renews, your service will be canceled. We’ll hold your phone number for 60 days to give you a chance to enter a payment method and re-order service.

Cancel Build-A-Plan service

To cancel your Build-A-Plan service:

  1. Sign in to your Build-A-Plan account.
  2. Scroll to Options, then select Cancel this line.
  3. Select Continue and review the terms.
  4. Choose Cancel now. Your service will end on your next renewal date.

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Last updated: October 20, 2026

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