Do I need to bring my own phone for Build-A-Plan?

Yes. Build-A-Plan requires you to bring your own phone that supports eSIM; most newer phones do (iPhone 13 and up, and Samsung Galaxy S24 and up). Learn more about eSIM and see if your phone is compatible Your phone should be paid off and unlocked, so it can work on any compatible network.

Does Build-A-Plan work for tablets and watches?

Currently, Build‑A‑Plan only supports phones. For plans that include tablets and watches, check out unlimited options .

What is Build-A-Plan?

Build‑A‑Plan lets you create a wireless plan with the features you want—like what amount of wireless and hotspot data—so you pay only for what you need. Here’s what you get A customized plan: Start with a base plan, then add or remove features anytime. All plans include AT&T ActiveArmor ® for 24/7 security. 1 Add-ons like AT&T International Day Pass and AT&T Turbo aren’t available right now. Easy online setup: Sign up, activate, and manage your plan when it works for you. A simple monthly price: Your monthly cost is based on the features you choose. Change it when you want: Update features and add data in the AT&T app anytime. Bring your own phone: Use an unlocked, AT&T‑compatible phone that supports eSIM. If you’re switching to AT&T, you can keep your number. 2 Why you’ll like it It’s flexible: Add more data when you need it, or scale back when you don’t. You’re in control: Make changes anytime in the AT&T app or on att.com.

Is Build-A-Plan a subscription?

Yes. Build‑A‑Plan is a monthly subscription where you’re charged on the same cycle each month. AutoPay is required. (There is no AutoPay discount.)

Can I get a multi-line discount with Build-A-Plan?

Build-A-Plan is only available for one line per account. If you have an AT&T Wireless account, you can add Build-A-Plan for one new line. This might help you save if you have a family member who doesn’t need unlimited data or the latest smartphone.

Can I bring my number to AT&T when I switch?

Yes. During sign‑up, you can choose to transfer your number. You’ll need a Number Transfer PIN from your current carrier.

Can I add people to my Build-A-Plan account?

Not right now. Build‑A‑Plan is only available for one line per account, so each person needs their own account. No credit check or deposit is required.

Build Your Own Plan | Customize Wireless from AT&T

Bring your phone.
Build-A-Plan.

Switch to AT&T and create the ideal phone plan for your budget.

Starting at$15.00 per month.

Online only. Plus taxes & fees. Limit one line. Must bring unlocked, eSIM-capable phone.

Get started

How it works

The $15/mo. base plan includes unlimited talk, text, and 1GB of data. From there, add additional features that fit your needs.

Bring your phone

Build-A-Plan is for one line only. To bring your current phone, it must be paid off, unlocked, and support eSIM (i)—most newer phones do.

Add more data

Upgrade your wireless and hotspot capabilities, starting at $5/mo. each.

Set up AutoPay

You’ll be charged every month at the same time.

Get started

Data that fits your needs

Get exactly what you need at a price that works for you.

Wireless

Choose 5GB, 15GB, or unlimited—starting at $5/mo.

AT&T may temporarily slow data speeds if the network is busy.

Plus taxes & fees.

Hotspot

If you want hotspot data, choose 5GB, 25GB, or 50GB—starting at $5/mo.

Plus taxes & fees.

Running low on data?

Add 5GB extra at any time; good for 5 days, for just $8.

Plus taxes & fees.

More connection options

With Build-A-Plan, you have to bring your own phone. If you want to buy a new phone or connect other devices—like tablets or watches—try our best unlimited plans.

Shop unlimited plans Bring your own tablet or watch

Frequently asked questions

Build‑A‑Plan lets you create a wireless plan with the features you want—like what amount of wireless and hotspot data—so you pay only for what you need.

Here’s what you get

A customized plan: Start with a base plan, then add or remove features anytime. All plans include AT&T ActiveArmor^® for 24/7 security.¹ Add-ons like AT&T International Day Pass and AT&T Turbo aren’t available right now.
Easy online setup: Sign up, activate, and manage your plan when it works for you.
A simple monthly price: Your monthly cost is based on the features you choose.
Change it when you want: Update features and add data in the AT&T app anytime. Bring your own phone: Use an unlocked, AT&T‑compatible phone that supports eSIM. If you’re switching to AT&T, you can keep your number.²

Why you’ll like it

It’s flexible: Add more data when you need it, or scale back when you don’t.
You’re in control: Make changes anytime in the AT&T app or on att.com.

¹Requires compatible device/service and download of ActiveArmor^® app. Data rates may apply. Other terms and restr’s apply. Details: att.com/activearmorapp.

²Must bring unlocked, eSIM-capable phone.

Comprehensive Guide to AT&T Build-A-Plan

This guide is a comprehensive reference for AT&T Build-A-Plan, designed to walk through every detail of how the plan works — from the base $15/mo. service through the available wireless data tiers, hotspot options, configuration rules, and signup process.

It includes detailed tables covering all 13 valid plan configurations, the complete pricing matrix, eligibility requirements, and how Build-A-Plan compares to AT&T's postpaid wireless plans. You'll also find answers to the most common questions about hotspot add-ons, mid-cycle data options, plan changes, billing, device requirements, and what happens if you run out of data.

Available wireless data tiers include 5GB, 15GB, unlimited SD, and unlimited HD, with optional hotspot tiers of 5GB, 25GB, and 50GB based on the wireless data tier selected. The unlimited HD tier includes 4K UHD streaming; other tiers stream video in standard definition. Plan changes take effect at the next monthly renewal, and mid-cycle 5GB data add-ons are available for $8 (good for 5 days).

For a complete breakdown of pricing, configuration options, eligibility requirements, and plan rules, see the complete AT&T Build-A-Plan guide

Whether you're a new customer evaluating whether Build-A-Plan is right for you, an existing AT&T Wireless customer considering adding Build-A-Plan as a new line, or simply trying to understand how the plan's modular pricing works, the guide covers what you need to know to choose the right configuration with confidence.

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Build Your Own Plan | Customize Wireless from AT&T

Bring your phone.
Build-A-Plan.