Phone Plans Explained: Postpaid, Prepaid and MVNOs in the US
US phone plans fall into three families: postpaid plans from the big carriers, prepaid plans paid in advance, and MVNOs that resell the same networks for less. Here is how each works, what deprioritization and hotspot limits mean, and how to work out what you actually need.
Quick answer
US phone plans fall into three families: postpaid plans from the big carriers, prepaid plans paid in advance, and MVNOs that resell the same networks for less. Here is how each works, what deprioritization and hotspot limits mean, and how to work out what you actually need.
In this article
Most Americans pay more for their phone plan than they need to, not because cheap plans are hard to find, but because plan pages are designed to make different products look identical. Once you understand the three basic types of plan and the handful of limits hidden inside the word "unlimited," comparing them takes minutes rather than hours.
The three kinds of plan
Postpaid
Postpaid is the traditional arrangement with AT&T, Verizon or T-Mobile: you use the service, then receive a bill. Postpaid plans usually involve a credit check, and are where carriers concentrate their phone promotions, multi-line discounts and bundled perks such as streaming subscriptions.
What you get: the highest data priority on the carrier's network, the broadest set of features (international roaming packages, in-flight texting, smartwatch lines), and in-store support. What you pay: typically the highest monthly price, plus taxes and fees that are added on top of the advertised rate.
Prepaid
Prepaid plans are paid at the start of each month. There is usually no credit check and no contract, and the price you see tends to include taxes and fees. Every major carrier sells prepaid service, either under its own name or through a separate brand.
Prepaid data is often given lower priority than postpaid on the same network, and features like international roaming may be limited. In exchange, the monthly price is lower, and some prepaid brands offer further discounts for paying several months in advance.
MVNOs
A mobile virtual network operator rents capacity from one of the big three networks and sells its own plans. Some are owned by the carriers, such as Visible (Verizon), Cricket Wireless (AT&T), Metro by T-Mobile and Mint Mobile (T-Mobile). Others are independent, or run by cable companies, which sell mobile service to their home internet customers.
The coverage is the coverage of the host network. What differs is the price, data priority, customer service (often online only) and which phones and features are supported.
| Postpaid | Prepaid | MVNO | |
|---|---|---|---|
| Billing | After use, monthly | In advance | Usually in advance |
| Credit check | Usually | No | Usually no |
| Data priority | Highest | Often lower | Often lower |
| Phone deals | Biggest promotions | Some | Few; bring your own phone |
| Taxes and fees | Usually added on top | Often included | Varies |
| Support | Stores, phone, online | Stores and online | Mostly online |
What "unlimited" really includes
Almost every plan is sold as unlimited. The differences are in the fine print, which US carriers now publish in standardized broadband labels under FCC rules. Look for:
- Premium or priority data. Some plans give a monthly amount of high-priority data; after that, your speeds can drop when the network is busy. Others are deprioritized from the first gigabyte.
- Deprioritization. When a tower is congested, lower-priority users get slower speeds. In a quiet suburb you may never notice; at a packed stadium or a busy downtown station you will.
- Hotspot data. Using your phone as a Wi-Fi hotspot for a laptop is often capped at a set amount of high-speed data, then slowed sharply.
- Video resolution. Cheaper plans may limit streaming to standard definition on cellular.
- 5G access. Most plans now include 5G, but some restrict the fastest 5G bands to higher tiers.
- International use. Roaming in Canada and Mexico is included on many plans; elsewhere it can be a daily charge, a pass or not available.
Working out what you need
Your phone already tracks how much cellular data you use. On an iPhone, look under Settings, then Cellular; on Android, under Settings, Network and internet (the wording varies by maker). Check a few months if you can.
- Light users who are on Wi-Fi at home and work often use only a few gigabytes a month. A small fixed-data plan from an MVNO may be all they need.
- Moderate users who stream music and some video on the go may be comfortable on a prepaid or MVNO unlimited plan.
- Heavy users who tether laptops, stream lots of video on cellular or rely on their phone as home internet benefit most from postpaid priority and larger hotspot allowances.
Also ask: where does your signal need to be strong? Check coverage at home, at work and on your commute, and if possible test with a cheap prepaid SIM or eSIM for a month on a network before porting your number.
Family and multi-line plans
Per-line prices fall as you add lines, which is why carriers push family plans. Before combining:
- Compare the total monthly cost with each person on their own cheaper plan. For mixed households, a premium plan for one heavy user and MVNO lines for everyone else can cost less.
- Remember that the account holder is responsible for every line's bill and device payments.
- Check whether discounts require autopay, paperless billing or a debit card rather than a credit card; some carriers offer larger autopay discounts for bank account or debit payments.
Taxes, fees and other add-ons
On postpaid plans, the advertised price often excludes state and local taxes, 911 fees and the carrier's own administrative charges, which together can add a noticeable amount per line. Prepaid and many MVNO plans fold these into the sticker price. Compare the total on a sample bill, not the headline.
Watch for one-time charges too: activation or "connection" fees, upgrade fees when buying a new phone, and SIM kit costs. Many carriers waive some of these online.
Discounts worth asking about
Carriers offer reduced rates for certain groups, commonly military members and veterans, first responders, seniors (usually 55+, with eligibility rules that differ by carrier and state) and employees of partner companies. Low-income households can check the federal Lifeline program, which provides a monthly discount on phone or internet service to eligible subscribers; details are on the FCC and Universal Service Administrative Company websites.
How to switch without losing your number
- Make sure your phone is unlocked and compatible with the new network.
- Get your account number and a number transfer PIN from your current carrier's app or website.
- Start service with the new carrier and choose to transfer your existing number.
- Wait for the port to complete before you cancel anything. The port itself closes the old line.
- Pay any remaining device balance and check your final bill.
The right plan is the cheapest one that covers your real usage on a network that works where you spend your days. Once you've found it, set a reminder to review it every year: plans change constantly, and carriers rarely move existing customers onto better deals unprompted.
Frequently asked questions
Is an MVNO plan worse than a plan from the big carriers?
An MVNO uses the same towers as the carrier it rents from, so coverage is usually identical. The main differences are data priority during congestion, customer service, and sometimes access to features like international roaming or the newest network capabilities. For many people the difference is hard to notice day to day.
What does unlimited data actually mean?
It generally means you won't be cut off or charged overages, but your speeds can be slowed. Many plans can deprioritize your data when a tower is busy, cap hotspot use at high speed, and limit video resolution. The plan's disclosure page, sometimes called a broadband label, sets out these limits.
Can I keep my phone number if I switch to a prepaid plan or MVNO?
Yes. Number portability means you can take your number to any US carrier. You'll need your account number and a port-out PIN from your current carrier, and you should not cancel the old service yourself; the port completes the switch.
