What AT&T offers and how to compare their plans

AT&T is a wireless carrier that offers mobile phone service, home internet, and landline phone service across the United States. Their mobile plans vary by data allowance, number of lines, and whether you bring your own phone or buy one through them. Home phone service through AT&T comes as a standalone landline or bundled with their internet and TV packages. Understanding what each service type includes — and what it costs month to month — helps you decide whether AT&T fits your situation or whether another carrier might work better.

AT&T's pricing and plan structure change regularly, so the specific dollar amounts and data limits available to you depend on your location, the current promotion running, and whether you are a new or existing customer. This guide explains how their main service categories work and what to look for when comparing them.

Key Takeaways

  • AT&T mobile plans come in prepaid (month-to-month, no contract) and postpaid (contract or no contract) versions, with different data limits and pricing for each.
  • Home phone through AT&T is available as a standalone landline or bundled with internet and TV, and the cost depends on which bundle you choose and your location.
  • AT&T's coverage and available speeds vary by address, so checking your specific location on their website before signing up tells you what service type you can actually get.
  • Switching to AT&T from another carrier may include a credit toward your early termination fee with your old carrier, but you will need to provide proof of that fee.

AT&T mobile phone plans: prepaid versus postpaid

AT&T's mobile service splits into two main categories: prepaid and postpaid. Prepaid plans require you to pay before you use the service, with no contract and no credit check. You choose a monthly allowance of data, talk, and text, and if you run out before the month ends, you can add more or wait for your next billing cycle. Prepaid plans through AT&T are sold under the brand name AT&T Prepaid and are available through their website, retail stores, and some third-party retailers.

Postpaid plans bill you after you use the service, usually at the end of each month. You sign an agreement (which may or may not include a contract term) and receive a bill for what you used. Postpaid plans through AT&T are sold under the brand name AT&T Wireless or AT&T Mobile, depending on the plan. Postpaid plans typically offer more data for the price than prepaid, but they require a credit check and may include an early termination fee if you cancel before your contract ends.

Both prepaid and postpaid plans let you bring your own phone (if it is compatible with AT&T's network) or buy a phone through AT&T. Buying through AT&T usually means paying the phone cost over time as part of your monthly bill, rather than paying the full price upfront.

How AT&T mobile data limits and pricing work

AT&T mobile plans are organized by how much data you can use each month. Data allowances range from a few gigabytes per month on lower-cost plans to unlimited data on higher-cost plans. The price you pay depends on the data tier you choose, how many phone lines you add to your account, and whether you are bundling with other AT&T services like home internet or TV.

If you exceed your monthly data limit on a postpaid plan, AT&T will either slow your data speed for the rest of the month (on unlimited plans) or charge you for additional data (on limited plans). The exact overage charge depends on your plan type. On prepaid plans, you typically cannot use data beyond your monthly allowance unless you purchase an add-on.

AT&T also offers family plans that let you add multiple phone lines to a single account and share a data pool. The cost per line usually decreases as you add more lines, so a family plan is often cheaper per person than individual plans. You can set data limits for individual lines on a family plan to prevent overage charges.

AT&T home phone service and bundled packages

AT&T offers home phone service in two ways: as a standalone landline or bundled with home internet and TV. Standalone landline service through AT&T is available in some areas but not all — availability depends on whether AT&T's infrastructure reaches your address. You can check availability by entering your address on AT&T's website.

More commonly, AT&T sells home phone as part of a bundle. Their main bundle product is called AT&T Internet and Phone (internet plus landline) or AT&T TV, Internet, and Phone (all three services). The bundled price is usually lower than buying each service separately. The home phone service included in these bundles is a traditional landline that works through your internet connection (called VoIP, or voice over internet protocol).

Bundled packages lock you into a contract term, usually 12 or 24 months. If you cancel before the contract ends, AT&T charges an early termination fee. The amount of the fee depends on how much of the contract period remains. Standalone landline service may or may not include a contract, depending on the plan you choose.

AT&T coverage, speeds, and service availability by location

AT&T's mobile network coverage and home internet speeds vary significantly by address. For mobile service, AT&T uses a combination of its own towers and agreements with other carriers to provide coverage. Coverage is generally strong in urban and suburban areas but may be weaker or unavailable in rural areas. You can check mobile coverage at your specific address using AT&T's coverage map on their website.

For home internet, AT&T offers different technology types depending on your location: fiber (fastest), fixed wireless (medium speed), and DSL (slower). Not all technology types are available at every address. The speeds you can get — measured in megabits per second, or Mbps — depend on which technology type is available where you live. AT&T's website shows which speeds are available at your address when you enter it.

Before signing up for any AT&T service, check availability at your specific address. A plan that works well for your neighbor may not be available to you, or may offer different speeds or coverage.

Switching to AT&T from another carrier

If you are currently with another wireless carrier and want to switch to AT&T, you can keep your phone number by requesting a number transfer (called porting). AT&T handles the porting process, but you will need your account number and PIN from your current carrier to authorize the transfer. The process usually takes one to three business days.

AT&T periodically offers credits toward early termination fees charged by your previous carrier. These promotions vary — sometimes AT&T credits a flat dollar amount, and sometimes they credit the full fee up to a certain limit. If you are switching during a promotion, you will need to provide AT&T with proof of the early termination fee (usually a screenshot or letter from your old carrier) to receive the credit. The credit may appear as a one-time payment or as a credit spread across several months of your AT&T bill.

If you are switching from a carrier that uses a different network technology (for example, from a carrier that uses Verizon's network to AT&T's network), your old phone may not work on AT&T's network even if it is otherwise in good condition. Check whether your phone is compatible with AT&T before you switch.

AT&T contracts, early termination fees, and month-to-month options

AT&T postpaid mobile plans and bundled home services typically come with a contract term of 12 or 24 months. During the contract period, you agree to keep the service active. If you cancel before the contract ends, AT&T charges an early termination fee. The fee amount depends on how much of the contract remains — the earlier you cancel, the higher the fee. AT&T publishes the early termination fee amount when you sign up, so you know the cost upfront.

Some AT&T plans are available without a contract (sometimes called month-to-month plans). These plans have no early termination fee, but the monthly cost is usually higher than the same plan with a contract. Month-to-month plans give you the flexibility to cancel anytime without penalty, which can be useful if you are unsure whether you will stay with AT&T long-term.

AT&T prepaid plans have no contract and no early termination fee — you can stop service anytime by straightforward not renewing your plan. This makes prepaid a lower-risk option if you want to try AT&T's network without a long-term commitment.

Frequently Asked Questions

Can I use my current phone with AT&T?

It depends on your phone's model and which network it was built for. AT&T uses a network technology called LTE and 5G. If your phone was made for AT&T, Verizon, or most other U.S. carriers, it will likely work. Check AT&T's compatibility tool on their website by entering your phone's model number, or call AT&T customer service to confirm before you switch.

What happens if I go over my data limit?

On unlimited postpaid plans, your data speed slows down for the rest of the month once you hit a certain threshold (usually 50 GB to 100 GB, depending on the plan). On limited data plans, you are charged for each gigabyte of data you use beyond your limit, or your data stops working until the next billing cycle. Prepaid plans typically stop data access once you exceed your allowance unless you buy an add-on.

Do I have to sign a contract with AT&T?

No. AT&T offers month-to-month plans for both mobile and home services, though they usually cost more per month than plans with a contract. Prepaid mobile plans never include a contract. If you choose a plan with a contract and cancel early, you will owe an early termination fee.

How long does it take to transfer my phone number to AT&T?

Number transfers (porting) usually take one to three business days. You will need your account number and PIN from your current carrier to start the process. During the transfer, your old service may stop working before your new AT&T service starts, so plan for a brief gap in service.

Is AT&T home phone service available at my address?

Availability depends on your location and which AT&T services reach your address. Enter your address on AT&T's website to see which home phone options (standalone landline or bundled packages) are available to you. Not all areas have access to all service types.